Terrible customer service

I have fiber account with mweb, my problem is that I requested to change my debit date from the 1st to a new date, they advised me that I need to cancel the current service that I have with them. I didn't not cancel I continued with that debit date its been a year now.

Last week on the 7th November I tried to make payment however they had a problem with Capitec bank. I called their billing department to query the payment and query again if I can change my debit date. A lady advised me they can't change debit date I need to request for cancelation first and request for new service. And she further more said that I should leave it as it as my services will automatically get canceled on Friday.. Now Monday they debit my account R399 I dnt know as I'm thinking that my services are canceled. Today 15 November I called billing department so that they can reverse my payment they say that they will log query to vumatel and they transfer my call to sales department I dnt know why sales.. I need to reverse my money. I spend whole 30min without any resolution. Or any Ref number. I'm soo ****ed with their customer care especially billing.