Dissatisfied and disgusted at the service from Telkom

I have a contract with Telkom, they are supposed to be debiting me R199 every month on the 15th. On the 15th of April they took R199, it was returned on the 17th only to be debited again on the 25th. On the 15th of May I was debited R404 because according to them I've missed the payment. But I've sent them my bank statements on the 20th of May for them to investigate what happened , until today there has been no communication, not even an acknowledgement of receiving the bank statements. Going forward I'd just like to cut all ties with Telkom, yho ****** 🤮