OVERCHARGING CUSTOMERS THE NAME OF THE GAME!!

I took out a new contract with MTN and received my sim card on the 27th of July 2021. I could only start using it in August as the courier company did not fica me timeously. That was the reason I was given. OK fine, no problem. I also had to buy my own router as they had none available at the time. I could only purchase a router from MTN on the 18th of August 2021 due to a shortage. The contract concluded was for R599.00 per month. Then an amountof R946.00 was debited to my account today. When I queried it I was advised that it was for pro rata services!!! Now I had to log a query to get it resolved and if I return the debit order I will cause problems on my account. This is beyond unbelievable!!! Overcharging customers are apparently the name of the game. 72 hours turn around time with reference ***. I will keep you to this time period this time!. This is a breach of the agreement you concluded with me and will not be tolerated.