Telkom incompetence

I was billed 3 times my monthly installment for my contract phone in May. once on the 5th fully paid up, on the 15th 2 extra full monthly installments. thus 3 times I phoned in the consultant confirmed that it was a fault on their side reversed the wrong installments today I get a sms from a attorney to contact them regarding my Telkom account What the hell is going on at Telkom?? You took unauthorized money from my account And now a attorney is contacting me?? For what money that is not due, and taken faulty without authorization It should be the other way around?? What the hell is happening here??