RCS is a joke. I am now taking legal action.

I settled my account during December. Then in January I receive a mail that I am in arrears. I then contact RCS via Whatsapp as I don't enjoy the waiting on call centres. I was told all was sorted. Then on 23 January I get a mail again telling me I am in arrears. I phone the call center and the consultant tells me that my account was never closed and that it generated service fees.... she closed it for me and I will not hear from RCS again. Now...mid March I am in arrears by R122 and I try and phone them 3 times to get this resolved. The whatsapp service is a joke, the consultants promise action, nothing happens and the R122 might seem trivial, but (a) I do not owe that amount and (b) it impacts my credit rating due to *********** people at RCS. I tell them to get the recording from 23 Jan to confirm what was said and I am not being taken seriously. I am being told that if I wish to close my account, they can send me a settlement amount. REALLY???????? HOW CAN YOU CHARGE FOR SERVICE FEES IF YOUR SERVICE IS NON-EXISTENT???????????????????????? I will now take legal action. I am done.