Debiting my account rejection fee for what?????????????????????????????????????????????????????

I cancelled my contract on the 7th day. A contract offered by mondo... an agent of telkom. So they failed to notify telkom of my cancellation and I got billed. I cancelled the contract cause the stupid agent that called me insisted that my device takes 2 sim cards. Because she uses the device and hers does take 2 sims. A HUAWEI Mate 8. The sim does not fit in my device hence I cancelled. mondo does not work on weekends. So the Saturday and Sunday to them are not counted. So I can safely say I cancelled my account with them within 5 working days. The sims were never collected. 3 months later, behold. telkom is still debiting my account R 200. And I still need to log a case. How many cases do I need before you stop taking money ********ly? 783 cases????? Yoh, telkom is lucky they have government guarantees they don't deserve an operating licence.