Poor service delivery

Telkom has a very bad customer service, I went to their branches many times for help they always log a call for me for their call center to call me. Their call center also never help as I've been trying to sort my wifi internet service that has been suspended for the past 3months. I'm getting billed every month with a rejection fee while they switched off their services. I have all proof of payment and emailed to one of many agents I've spoken to over the phone and he also never got back to me. Others I've spoken to they say the payment is not reflecting on their side. This is exhausting and frustrating because I'm paying for the services that I don't have.