Telkom Mobile - Causing me headaches with incorrect billing and unauthorised debit orders

*********** service provider. Endless problems with a mobile contract taken out in November 2019. No monthly invoices received. Invoices that are received are contradictory to terms of contract taken out. Insufficient explanations provided when calling Customer Service. Unauthorised debits on unauthorized dates taken from my bank account. Three debits in one month. Then penalty charges of R200 for bounced debit orders that were not authorised in the first place. Really and truly dissatisfied with Telkom Mobile. Should never have changed from my previous service provider. Going to have to cancel this contract and return the phone if they cant get this right.