What is Skype trying to hide?

Question

I've had a problem with incoming calls for some time; some ring through, others don't. I only find out about the missed calls when I get emails telling me I have voicemail, though the actual voicemail doesn't usually appear in Skype until much later - sometimes as late as a day later.
Pretty straightforward issue, right? "Some calls are not reaching me." Not a lot of subtlety there. But chat support has been incompetent and awful. I've been promised follow-ups that never occur. I've gotten bad information, misinformation and been outright lied to - repeatedly. And every single support rep I've spoken with has read/heard "Some calls are not reaching me" as "NO calls are reaching me" - big difference, yet often I've had to correct them several times in the same chat!
So after literally 90 minutes on chat support this morning, I said enough. Support is not helping. I wanted to contact Skype's US office - not so much because I expected them to provide tech support, but simply to let them know about the poor service I'd received. (Those who have had similar impulses will know where this is going, I'm sure.) I was told there are no US offices for Skype, despite all manner of evidence to the contrary. After being pressed repeatedly, I was given the company's Luxembourg address.
Suddenly my question went from "Can you fix my technical issue?" to "What is Skype trying to hide?" Skype is reaping fortunes from its US customers. It seems pretty outrageous that Skype won't deign to speak with them, except through overseas representatives who barely seem to understand the product they're meant to support. 
Is there any accountability at Skype?
Note: Even trying to post this here, I keep getting an error message ("An unexpected error has occurred") just trying to Preview this post. You are a communications company, right Skype?

Answer 1

I've heard from Aimi, who's requested additional info. I'll provide it, but why isn't all of this data readily available to Skype support? Certainly I've given it to them in great detail several times now, to every single Skype support staffer I've spoken with - in chat, on the phone, via email. Is there not a case log that reflects this? Am I really keeping more complete case files on this issue than Skype?
I have three issues with Skype, each escalating out of the previous one.
1. Some of my incoming calls are not coming through. Obviously I cannot know how many, but I frequently recieve emails alerting me to voicemail that, upon login to Skype, have not arrived. Sometimes the messages do show up after a few hours, sometimes the next day, sometimes after logging out and logging back in. Sometimes, I imagine, they don't show up at all. And missed calls who don't leave a message? No idea. Have voice messages been left that never reached me at all? It certainly seems likely.
2. In trying to report this issue via chat, it was clear the reps were unable to grasp even the basics of my issue. EVERY SINGLE rep I chatted with could not keep straight that not ALL of my incoming calls were failing to connect, but SOME were. These are two different issues, and SOME versus ALL seems a clear and simple distinction. But it proved too much for Skype chat support, and reps often couldn't keep this fact straight IN THE SAME CHAT. Imagine asking a waiter to hold the mayo, only to have them reply, "...Extra mayo, right?" Over and over. And you just know that sandwich is showing up with mayonnaise.
In investigating my issue, Skype staff attempted to phone my line repeatedly and could not connect. How many tech issues go unresolved because the issue can't be recreated on command? This is the support team's FIRST-HAND experience  with the issue in question, an ideal sampling. Some SEVENTEEN calls were attempted by Skype's support team to my line, only the last of which connected. But rather than follow up on their own experience, they've insisted that if I can't provide the phone numbers, dates and service providers (!) of OTHERS' failed incoming calls, there's nothing Skype will do to resolve the issue. When I asked the Skype supervisor if he'd provide that very same data for the seventeen calls to my line from his office, I was told he and Skype would be unable to accommodate me.
3. Extremely displeased with the failures, time wasting and general inadequacy of Skype's support options, I asked for a mailing address for their US offices. I simply wanted to write to corporate as a dissatisfied customer, to call the failings of their support services to their attention. Every single Skype rep I've spoken to has refused to share a domestic address for the company. Some insisted there is no US office, others have tried to deflect the question - "We just want to be sure you're dealing with the right venue that can help you" etc. But most Skype employees/contractors simply ignore the question as though I never even asked it - though I've asked it in every chat (multiple times) and in each email. 
What kind of company reaps the kind of profits Skype does from its US subscribers, yet refuses to share a mailing address for its domestic offices? This is not the behavior of an ethical company doing business on level ground. Companies with nothing to hide DON'T HIDE. Even the Better Business Bureau - a worthy organization that most ethical, reputable businesses are pleased to be on record with - has only dead addresses for Skype. Does this suggest an ethical corporate culture that makes customer service any kind of priority? Because I see it as closer to the kind of behavior exhibited by fly-by-night operations eager to avoid any kind of accountability whatsoever. It all makes for a highly suspicious public profile in any reasonable estimation. And their customer service, in my experience, is a cruel joke on its subscribers.
The only way I've been able to get Skype's attention at all has been by shouting loudly, via every means I can think of: repeatedly requesting a mailing address to write the company, a phone number, posting to this forum, emailing Skype's Facebook account, Tweeting to two different Sype Twitter accounts... And in terms of Skype service and problem resolution, I'm no farther along than I was weeks ago.
And in terms of providing an address for their US offices, Skype still appears to have something to hide.