Impossible to cancel Telkom service

I am waiting since 3 Mar 2018 for Telkom to process my online service cancellation request. When I go to the Telkom Store in the Vaal Mall they tell me that a service cancellation request is not accepted at any Telkom Store - ONLY online. Telkom continues to bill me for a service that has been cancelled on 3 Mar 2018, and after my service cancellation notice period of 30 days has expired. Telkom makes it impossible for their customers to cancel a service. I have tried the fault logging route as well and have had no success. Shame on you Telkom! You would not get away with this appalling service if you were a private company!