Bad Network reception/ No solution provided

I have been dealing with Telkom Mobile since 4 December 2017 regarding Terrible Network reception in my area; in Johannesburg and Telkom Mobile is not willing to do anything to improve quality of service. I was told that because I moved from the address signed on the contract, their cannot be held responsible for the terrible network service, even though the new property is 4kms away from previous address. I have called the customer care centre, communicated with their Twitter Team and gone to the branch in Eastgate Mall. No resolution to this issue. Telkom is not willing to resolve this matter.