Inconsistency and unrealistic Debit amounts

I have been billed Inconsistently since January 2025.the amount increases every month and last month they didn't debit on the agreed debit order date, I later in the month received a message from debt collectors stating that I missed a payment. This past month I was Debited R2 350 from R470, and on top of that apparently there is still R1700 that I owe Vodacom. For what I don't know.

Really unproffesional- ******* and ****mers in suits. I wouldn't recommend anyone to Take up a contract with Vodacom as I my self is in process on getting rid of anything Vodacom related including prepaid Simcards.