Struggling for weeks to get paid up letter

I have been trying to get a paid up letter since the 4th of June. Today again I called and was told that it would be sent to me in a few minutes. I still have not recieved it. This is uacceptable very poor customer service. Wesbank is quick to haras you when u fall behind with only one payment but now that I owe the bank nothing they cant provide me with the paid up letter. This is really disgusting service to be treated this badly and constantly sending emails and calling over and over for the letter. Disgusting poor service. I still have not recieved the letter after calling yet again today for it!