Vodacom is nonsense

opened a sim only deal around the first week of October 2022. I requested my Debit order to go though the first of every month. Come the first of November 2022 the Debit did not go through. I sent an email to vodacom asking why the debit did not go through as I had sufficient funds in my account next thing the email response has nothing to do with my question.The response was "your vodacom number 0799*** has been migrated to prepaid. As shocked as I was I called the customer care line and was sent through to contracts. I spoke to the lady there and she was also flabbergasted as whole vodacom consultant she was just as confused. She navigated the system and confirmed the number is on prepaid but she also does not understand why. I said to her since I have had the contract for a month can she tell me how much I need to pay since the first debit never went through as she checked she said I have to pay R800 I thought she is speaking to the wrong person because that does not make sense. How can a 149 sim only deal go from that R800 in month. Vodacom is so disappointing honestly. I am not going to pay R800. I wouldn't recommend anyone to use vodacom they are unprofessional.