Unprofessional Bank - credit card division

I am truly frustrated and annoyed with Standard Bank Credit card service. I have requested a settlement letter, 2 weeks ago. 1st via the App and after no response via the email address given on my statement. No response. Suddenly last week, I get a request for more info, which I sent through. 2 days later, I get a request from a different division, asking the same info. Which I queried. Again no response. 2 days ago, I raise this to the card queries email adress, getting a response, that someone will get back to me, within 24 hours. And here I sit, no reaction yet again. I find this very unprofessional and unacceptable that I can't even get my settlement letter. Does it really take that long to advise a client of 10 years, what my settlement is? Or does Standard Bank not value their clients. This is a horrible bank. And as soon as I can settle my account, I will close this account. And also advise everyone to stay away from this bank, and try to persuade them to move their accounts.