Vodacom Fibre Downgrading and billing department

Vodacom is an absolute pathetic service provider with the lack of basic communication skills and *********** staff who can’t even comprehend what you tell them , we have made many requests that our vodacom fibre package to be downgraded and billed accordingly however we are still getting billed the incorrect amount , many attempts to call vodacom and rectify this has been made but still getting billed the incorrect amount , each time the matter has been escalated but no feedback if it’s been sorted or not , Today the 28th Feb 2022 I called the billing department and was told that I will still be paying the incorrect amount of R699 , now can you understand my frustration.I would like this to be sorted out and expect my full refund for the two months .