Poor service and inefficency

I get no response from emails, was constantly harassed about a payment made-R100 by the way. I was given a settlement amount on 9 Dec and promised I would get confirmation in writing and details of account no etc so I can settle the debt. I paid to the account I had previously used for the same debt as I received no email. Still have no acknowledgement of payment. Phoned and was told to talk to customer care. Payment was received and again I was promised on 11 and 14 Dec someone would contact me and assist if I emailed ***. Still no response or response to the email of 10 Dec 2021 I sent and no acknowledgement of payment, for me a large amount. Tel the amount was was confirmed as paid without me giving the amount. The person simply said there was a payment for the amount I paid when they checked. This is ridiculous to get no response like this. At present it seems you cannot go to the offices and not sure you can even make an appointment according to the websire. Can any one recommend someone to take them on legally? Would consumer council help?