Billing fault with Telkom open for 4 months and is still not resolved

I logged a billing fault with Telkom billing on the 25 July 2018 because I was being incorrectly billed on my account. I called in more than 6 times to check on the dispute and each time they say they are escalating the issue but nothing has been done up until today. I spoke to Thamsanqa Gwala via Telkom billing who promised to sort it out and gave me his email to do a follow up but he ignores my email. I called in again to Telkom billing and was put through to a supervisor by the name Sicelo Jama who said the issue will definitely be resolved and I emailed him as well but no response and the issue still has not been resolved. Worst service I've received from a company and never has my time been wasted as much as this.