Frustrated!!!

I canceled my mobile contract on the 8th of March, yet I was still charged for the full month's service. The call center was incredibly unhelpful—I spent hours on the line without receiving any assistance. When I visited a Telkom store, I was told there was nothing they could do to help and that I should have been informed about the full-month charge with the call centre agent and no complaint can be logged with them. The lack of transparency and support has been extremely frustrating.