My findings on apps charged twice and iTunes account purchase history lost

Question

I've just got permission from Rebecah, from iTunes support, to publish my findings, so it can be of help to others about POTENTIAL duplicated charges in iTunes Store.
First of all, as Rebecah adviced me, I have to say that, although she states "Apple doesn't know how I ended up with two accounts with the same email", I should note that it's my fault because I signed up with another account, as their records say.
Now, to my findings:
1) It seems after 9 responses I had from iTunes support about my request for help with a suspected issue affecting THOUSANDS (more?) users, Apple relies on the SAME SUSPECTED system, on the SAME DATA RESULTING FROM THE BUG REPORTED to test whether the bug exists or not.
Why? Because nobody checks or looks for an answer other than "it's your fault. The system says you have two accounts. Stop using one account (that you created)".
2) I couldn't sign up with the same account. You couldn't. Try it by yourself. Rebecah knows that. She stated +"we can't see how the second account was created or why it occurred"+ but she wants me to note it was my fault, before I post (again) in the forums.
3) I was advised/encouraged by iTunes support and iTunes application's new login window to use my email as the login, instead of the id. NOWHERE in the site/application says my new login will create a new user, losing my purchase history (money)
4) My first post about the matter was removed, and there's no willing to find a fix. Not even a test to see if that can happen the way I say. Anyone with a free .mac account please try logging in with your non-mac email (the one related to your iTunes account) and let me know what happened with the purchase history.
My posts are shorter every time, for the sake of your search for help, because I'm closer to "you're wrong, shut up" and clearer like "I couldn't create two accounts with the same email". The reason why an issue that is making duplicated charges it's not solved yet… I can only GUE$$
Ask me for details and I'll try to use my best english to answer - and spanish too.

Answer 1

I have the same problem as well. I rented a movie a couple of days ago, it was downloading, but was taking longer than usual, so i canceled the download, just so i can continue it for the next day. The next day, I get the error when checking for downloads that Itunes is not available. hasn't worked since. I also tried purchasing a tv show today and got the 5002 error. It charged me twice as I pressed it twice since my balance didn't refresh 'til i bought it a second time..