Vodacom not assisting in rectifying THEIR errors

After telephonically agreeing to an upgrade through the Mondo team, effective from 1 February 2022, they implemented the upgrade on the date of our conversation, i.e. 10 January 2022. This resulted in me receiving an invoice for 2 line rentals, which is ridiculuous. After numerous phone calls within the 7 day cooling off period (before 17 Jan), I received a sms that the upgrade was reversed on 24 January 2022. The invoice was however not rectified and still I am accountable for paying for 2 line rentals. I spoke to a friendly lady in the finance department, who advised that I should pay the 2 line rentals, and upon rectifying my account (which can take up to 3 weeks), vodacom will reverse the amounts due to me. I find this unacceptable and requested to cancel my debit order as I was willing to pay for a single line rental via EFT. My EFT was paid on 1 February 2022, and surprise, surprise, my debit order ALSO went off. I had to reverse the debit order through my banking institution as THIS WAS NOT AGREED TO WITH VODACOM. I have spent so much time, had conversations with numerous people and no one seems to care enough to really try and help me sort out Vodacom's error. I am totally dissatisfied with the service to date received from Vodacom, this after being a client for more than 20 years! To this day I am still trying to sort out my account, for Vodacom to rectify their mistakes, with no Luck!!!