Telkom's pathetic service

Good evening, I'm with telkom for the past 3years now, this year I decided to get a wifi contract,long story short telkom over debited my account on the the 30th April 2019 by R1650, from that time till now I have no feedback from telkom they opened a case ***, they closed that case and said its resolved with no feedback to me, they then said there's no proof of a double debit I then forwarded the proof to them they said they will sort it out, a month and a half later still no feedback I then went in to the store to lay a complaint I was given ***, still no feedback (this was 2weeks back) I went back to the telkom store on the 12th July 2019 I was given a further ***, I went and done a reversal after 2months of waiting for my money so today I get sms's stating I'm in arrears and need to pay or they handing me over to lawyers and they will suspend my service, please can you help me