Renew Contract without permission - in lockdown

My Contract expired during lockdown, June 2020. I went into a branch to upgrade once the lockdown was a little lighter in August and i was told Telkom decided to just renew my contract!! i was then told by the consultant to pay for 3 months and then i could change the contract. I did this, there is however no telkom wireless signal in my area (i moved in August). So when i went back after 3 months to then change the contract to a line and not wifi i was told i will now be held liable for the remainder of the contract and then need to take out a new contract. I cancelled on the spot and to date still recieve bills from Telkom. I do not want, not requested the contact to be renewed. I want this cancelled with immediate effect!