Shocking MTN MONDO *****

I have had 2 phone contracts with Mtn for many years. Yesterday a sales woman from Mondo phoned and offered me an upgrade. I refused and said I would go to an MTN branch. Today MTN is trying repeatedly to process a new debit order for over R1700 only bank account. I phoned MTN and TWO extra contracts have been added to my account without my consent. Numerous calls to MTN and Mondo and the ***** department have got me nowhere and I was told if I canceled I would have to pay fees. SHOCKING *****.