Hi Stefy
Is the problem now that you can't login to the account? Or you can't add money to the account? Instead of charging the account with money you can add your card details. When you go to purchase something from Taobao the money is taken straight from the card rather than from the Alipay account. This is how I use Alipay and I don't have any problems this way.
Please let me know how the problem progresses and hopefully you get it sorted out.