Horrific service received

I took a contract with Telkom in November 2021 and the service I have received has been very disappointing. Telkom is happy to take my money and charge an extra R202 for a debit order that does not go off and this cannot be disputed. I have called Telkom on several occassions to get the matter sorted and up until today my issue has not been resolved. How does Telkom expect customers to recommend their services when they are failing to follow debit order instructions or even help a customer. My debit order date was updated a month ago and I still have to do manual payments and I am told that it is my bank blocking my Telkom debit order from going off. How is that even possible?????? Customer services agent are not even able to give proper explanations or guidance on this situation. This is very frustrating as each time I call I can either not get through to the correct department or I am holding for an agent for more than 15 minutes. Telkom really needs to evaluate the quality of the service that is being provided. This is horrific.