Useless Telkom

Hi. I have been a customer for over 5 years and I have never in my life been so dissatisfied with a service as I have been with telkom. I have a contract with them and in January I got a new job. My pay date was changed from the 30th of the month to the 5th. In January I told telkom over the phone (after been on hold for over an hour) that i need my debit order date needs to be change and the consultant told me that it was sorted. May 2021 I got a invoice from telkom(oh ja they don't always send me a invoice only when requested or when I'm shouting) stating that I owe them R500 for not paying on date stipulated. Went into the store of course they can't help cos telkom is useless so they let us phone from them to sort it out. Didn't work. June same story but now the amount is r700. Now end of September the amount was r1380 and end of September telkom stop my account. Don't ever get a contract with that useless stupid mobile service provider. I will keep on refusing to pay a cent until they have reimbursed me in any way