Vodacom cancelation - poor service levels

My contact terminated at the end of Nov 2021 and as I've learned from past experience, you would need to provide a month's notice and request for the contract to be canceled (or you will continue to be billed). Anyhow I followed protocol and requested cancelation within the required time frame and followed up with an email to Vodacom customer care as well in December. However, I recently learned that money was still being deducted from my account - 4 months later!!! I've sent several emails again, was called by the Vodacom customer care, transferred to the cancelation department and thereafter to the billing department who still had no clue about the full details of my case. Surely all this back and forth communication would be visible on their case log. But it seems that the departments work in silos too. All I want to know is when will my money be reimbursed and I hope this time that my contract has been terminated officially. I'm exhausted from the constant follow up and poor service. I want my money refunded!! Will Vodacom get this right.