Phone contract

I previously had a data router contact with Telkom and did not have any issues until the contact ended this year February. I then took a phone contact P20 and have had no joy with telkom ever since. They have never debited me with the amount we agreed on I once called the call centre and didn't get a answer I understood I then asked where I could log a complaint and I was referred to the telkom website I logged the complaint and didn't receive any acknowledgement what so ever. All what telkom did was to put my balance on the telkom app to 0 which was pointless as they still debited my account. I received another message this week that I'll be debited more again month end mind you I call in to get my speed limit to be 0. I wish I didn't even bother taking a phone contract with telkom