PRICELOCK POOR SERVICE

I have never experienced such bad service, DSTV Price Lock is the worst... it all started when I wanted to change my banking details. The request was sent on 6/08/2019 and this was not done. So the old account was debited and the payment did not go through. I called the Multichoice call center and managed to change my banking details via phone and asked them to do debit the amount that did not go through and I was told that they can only debit what reflects on the system which is R 1 080. When I asked why am I supposed to pay this much I was told that there was a system error on all PriceLock. I have been calling DSTV since 26/08/2019 and to date nothing has been resolved my account is currently on R 1 257. So PriceLock does not have a contact number only an email address and emails are not responded to....so how are we supposed to communicate with them when we have issues??