ITunes first won't verify my VALID card information. Now they've charged me SIX TIMES for the same purchase.

Question

I've submitted an e-mail. I've tried calling (here's the gem--they keep sending me HERE). I've gotten nothing.
It's the same problem everyone else has. My credit card information, while valid, isn't getting verified by iTunes. I've gone through every solution I can from my end, and no dice. I know my address is accurate and correct. My card information is accurate and correct.
However, that's not the only problem I'm facing.
I'm going through this problem trying to correct an outstanding balance that I have on my account (since, you know, iTunes is a bit unpredictable with when and what they charge you). I run into the error message, and now I find they've charged my account for the $18.98 balance SIX TIMES.
That's almost $120 that is suddenly missing from my account.
Apple. I'm just trying to pay you. Why make it this hard?
I don't want your textbook answers. I need you to FIX THIS before I lose the entirety of my paycheck for buying two albums.

Answer 1

First, please be aware that you are not communicating with Apple when you post here. The only people from whom you'll get a response are we your fellow users.
Make sure that the address in your iTunes Store account matches the address as shown on your credit card statement exactly. Any difference may cause an error. Other possible solutions that have worked for some:
Putting text in the second line of the address (including just copying the first line)
Expanding abbreviations e.g. St to Street, Ave to Avenue etc (or conversely abbreviating)
Putting the apartment or suite number on the second address line
If those suggestions don't help, contact the iTunes Store and tell them about the problem:
http://www.apple.com/support/itunes/contact.html
and with luck they'll sort the problem out for you, though it may take a couple of email exchanges with them to get past the "canned" replies they often send out at first. That will be the same way to contact them about the duplicate billing; there is no telephone support for the iTunes Store.
Regards.