Pathetic Service/Harrasment/Incompetence

I am at my wits end with RCS Galaxy card. I spent 4 months last year tyring to get them to reconcile my account as payment was not allocated on a monthly basis. Every single month I had to send proof of payment and request that they remove the interest they charge me for sms's emails and apparently letters they sent. I decided to pay up my account in March 2017 and close it never to do business with them again. It took me 4 months to get to a point where I agreed on the outstanding amount with help of a guy named Chad Meyer at RCS. I paid the account and requested my acc to be closed. Chad confirmed this in an email and I received a letter from RCS Galaxy confirming this aswell. Low and behold I start getting sms's, emails from RCS again this month telling me I owe R679+. For the last 3 weeks I have been sending them proof of my paid up letter and closed account. No one bothers to even look at my account or acknowlege what I sent them. They just send me a bunch of statements. In May it showed my account R0 balance, and June 2017. R500+ is miracously added. I must add that we are past June 2018 and only now are they deciding to harass me again. I am fed with the incompetence, and tired to death of being harrassed due to their incompetence. Try calling and speaking to a Manager!! THEY DO NOT EXIST ! Failing the Hello Peter complaint, I will take this up with the Ombudsman, as my right as a consumer has been violated. (TCF) Treating Customers Fairly? I think not !