The audacity.

On the 5th May 2017 I went to The Glen mall to request for a settlement amount for their mobile account,after 4 attempts of trying to get throught to their contact center and was told they are offline. I finally got the settlement amount and I paid it right there and than,I had to forward the proof of payment to their info suport and I did,even received a response only on the 12th to say the account was settled. They never again debited my account until September,which I reversed amd they have the audacity to all and ask my why I reversed it? the guy was even rude by saying "than I wont be able to help you,bye". I will not have an unauthorised debit order go off on my account especially for something iv long settled and requested closure on.