Credit Card Closure

I held an african bank credit card no:***, i requested a settlement letter which stated an amount of R41098.67 which was paid on the 2015-11-06. they debited my account on the 20th with an amount of R1565.00 to fully settle the account. i've been calling african bank call centre since the 2015-11-30 to close the account and get a paid up letter but 'm always being told stories by diffrerent consultants and have alot of reference numbers with non okf them being resolved. Tis is wasting time and not to mention my airtime.<br> all i want is a paid up letter and my account to be closed. This is really fraustrating and i will make sure that i never refer anyone to african bank this is the WORST SERVICE EVER.