Poorest service ever

1. My contract ended November 2020, I sent an email to cancel the contract, I called customer care, went to Twitter to try and cancel ASAP so I dont get charged. MTN took their sweet time and canceled it January 2021 so they can keep debiting me, what's sad is for December and January the debit order amount increased, and i was not informed about that when I took the contract. Why cant they stop debiting when the contract ends???

2. When they allegedly cancelled my contract one of their customer care said il get free 2gig for 3 months for remaining in their data base (thank God I had a call recorder) I called MTN to ask about the 2gig promised to me and no one knew anything about it. Then I sent the call recorder that proves the promise of the 2gig, they still haven't done anything today. Their service is beyond poor, it costed me money and heartache. I have been using MTN for over 15 years and this is how they thank me.