Unable to access iTunes account

Question

For the past few weeks (and potentially much longer, as I have only recently checked), I have not been able to access my iTunes account. I have checked and double checked everything i could think of - my password is correct, it is not my internet connection (as i have attempted viewing my account while at different friends' houses), and i have tried at different times of the day (thinking it might have been site traffic), as well as signing out and back in - nothing has helped.
Every time i try, the same message pops up: "Could not complete the iTunes store request. The store may be busy. Check your internet connection or try again later."
This is especially frustrating because it means that i can't normally report any purchase issues, nor manage my reviews (or change my nickname, which is what i was originally trying to do!).
I am at a loss for what else to try. Any help would be really appreciated!

Answer 1

I organised an allowance for my son and then set up an account for him. He received the email verification email. We responded to that, successfully according to the message we saw. Now I cannot we cannot access the account we set up. The debit for $20 has gone through my account, but there is no record of it in my "account" section when I am signed it. I also cannot see that there is a purchase history in the account section. Apple, you have my money, my son wants to be able to download music and apps NOW. Why can we not access the account we set up for him?