Telkom poor service

I’ve contacted Telkom 10 May 2017 to change my LTE-A mobile to fibre as there was no LTE-A mobile available in the area I moved to but was told I have to pay for a service which was not available to me. My son used the router as I had no use for Telkom’s service as it was unavailable at my new residence. I paid for the service till the contract expired and sent the required documentation to cancel the service which was obviously ignored and not given any attention. The contract is still active and funds are still been deducted after Telkom was instructed to cancel the service. The documents was sent numerous times, even to the store manager where I signed the contract.