Disappointed and missled

I have paid 12242.05 for Woolworth credit card,I had to borrow money to pay,under a wrong impression that as soon the money cleared on the account I will receive a paid up letter,approximately 2days,I call the mbd call center was told I'm no longer owing but I had to wait 30 days for paid up letter so that I'll present at Woolworth to close my account,the very same day I called again another consultant tell me to wait for email @14h00 they will send it,15:30 no email received I called again no another consultant said I must wait for 7 days while my account accumulate interest even my name at credit bearau become bad, while I have paid up