ANGRY MTN CUSTOMER

It is IMPOSSIBLE to cancel a data contract. I've been trying for 3 months with no luck. They've literally ****** R1500 up to date. Every time they claim an agent will phone me. Nothing. When you phone customer care and gets put through to cancellations, you hold for 45 minutes and then gets disconnected. Every. Single. Time.

I also cancelled phone insurance a year ago but still getting charged.

Any advice? Cancel my debit order at the bank? I still have a contract that I use though.