Worst service

my account was handed over to flemix and associates. on the 22/03/2016 they provided my with a settlement letter in which i paid on the 23/03/2016. The payment reflected on the 29/03/2016 and i ask them for the paid up letter of which they advised me that they waiting on authorisation from you. I then communicated with Sylvester working at African bank of which i provided the settlement letters and paid up letters of my loan as well as the credit card. i ask that my credit profile be updated as i settled. i then send Sylvester an email on the 30/03/2016 asking if there is any feedback as he advised me that all the information was send to the legal department. I then sent another email yesterday( 04/04/2016) asking for feedback and still nothing. i sent emails to flemix and associates and they keep advising me that they waiting on you to provide them with the paid up letter. I'M NOW SICK AND TIRED OF THIS NONSENSE. I have SETTLED MY CREDIT CARD ON THE 29/03/2016 AND TO DATE YOU GUYS ARE SENDING ME FROM PILLAR TO POST. ALL I WANT IS TO GET THE PAID UP LETTER FOR MY CREDIT CARD AND UPDATE MY CREDIT RECORD AS BOTH MY LOAN AND CREDIT CARD HAS BEEN PAID IN FULL.