Paid up letter

I'm very much irritated by African Bank. I've settled my credit card account with them on 12/08/2015 and asked them to send me the paid up letter. I waited for the letter until I called them on again on 17/08/2015, and one of their consultant told me she will forward the account and asked me to call again the next day and I've been calling everyday as if I'm negotiating with them for the letter. I still haven't received the letter up until now. <br> <br> This letter is so important to me, I need to get so I can forward it elsewhere. I'm so ****ing annoyed by this, everytime I call they say \My account will be forwarded"!!!! to who???? <br> """