Telkom Desperate Billing Errors

I completed my two 24-month contracts in 2022 April: a phone and an R99 router. I chose not to upgrade and cancel the cellphone contract when it ended but chose to proceed with the month-to-month 99 data package for the small router which I started having network issues with in December 2022/ January 2023. Created callback requests from Telkom numerous times to get assistance and sometimes when they call the consultants drop calls or sound like they are home? So decided to cut ties and move to Axxess which is amazing and not pay and haven't used them for 12+ months. Come March 2024 they debited almost R900 from an agreed debit check which was R99? and they decided to block the cell number of the old contract which I completed in 2022 with no contact? How does that work because the router has its own number? So since no one calls me back I decided to do this review which will hopefully get someone who knows what's going on to call me and close this once and for all. I am done and no longer interested because I know 3 people who have horror stories dealing with Telkom.