MTN is a the mafia in suit

So in August I took an non-contract wifi service with MTN. I stated that it's going to be a cash payment not debit order, the payment was to be made on the 4th of every month.

Everything went well until mid December when my service was suddenly stopped. I had made the payment on the 4th of December and on the 7th of December 2023 Mtn went into my account to make a debit. A debit I did not agree to because I had rejected the Debi-check they sent to me. Meanwhile my service is still stopped. I called them over and over and spoke about 30 different people over a 3 week period, mind all of them gave different stories.

Frustration levels are their peak and MTN accounts department and customer care continue to give exceptionally poor service. So in January I call Mondo the MTN subcontractor for this wifi service. Mondo say to me my account is a cash payment and is up to date as far as payments go and they will log in a query with mtn as why my service was stopped. To this day I'm still waiting. MTN is a mafia in a suit I'm cancelling this and I'll never ever use mtn again.

Their consultants are *********** and not helpful all. Now the problem I have is that I rejected the Debi-check my bank sent me so who gave MTN permission to go into my bank account to debit my money.