Bad service

I paid my settlement amount on my credit card last week & requested the consultant that I want the account closed and he confirmed that he has sent a request for the closure of that credit card & African bank received confirmation of the payment on the 18th February. But today when I call to check if the credit card is closed I am told no and they will be debiting my bank account & there is no way of stopping the debit & if I reverse it from the bank they will blacklist me. Like what the what? why must IO be blacklisted for something I paid in full & why must you come to debit for an account I requested closure on. You African bank are ****** I regret the day I worked into your branch because you are like a curse. Your service sucks. People must never be fooled by your adverts because you are quite the opposite of all the good banking service in this country you just ripping people off with your high interest. I want my money to be returned to my account tomorrow.