Olwethu should not be talking to your clients

I received a call from Olwethu about outstanding payments on my virgin active account. A membership I cancelled last year when I owed R600. They continued with the deductions after they said they would stop and tgis Olwethu person was rude. I gave him a chance to speak and he wouldn't let me get a word in. Eventually he stopped talking and as I tried to say something he interrupted me and told me he was not finished. As if I'm his child or owe him personally. He's arrogant, has no manners and is down right disrespectful.