Chase Bankcard Services, Mastercard Balance was paid in full 1/27/05. Feb stmnt showed $20.60. Disputed now $67.60 Ripoff Phoenix Arizona

I paid in full over $3000.00 to Chase Mastercard on January 27, 2005. Over a week or so before the due date. They sent me a letter with a $20.60 balance. I called and disputed. The person I talked to said that she would take care of it and it would show up 0 my next statement. I asked her to close the account and she said it would whenever the balance became 0. Next month the balance was $30.60. I called again. Again I was told that the balance would be 0. Next month it was up more. Now I have called today and they tell me that it will have to be approved for the $67.60 to be taken off that I should have paid the $20.60 in the first place. When would this end. If I paid off the balance of over $3000.00 and they tacked on an extra $20 bucks what about now. I have been repeatedly trying to get this taken care of and now they don't even want to talk to me. They have caused me to have a bad credit rating and this can effect my other card.

Jane
Puryear, Tennessee
U.S.A.