FNB Connect/ Smart device Refusing to cancel

I bought a phone with FNB in July 2017 the phone got sent to me on the 17 July 2017. I sent the phone back because it was faulty. Within the same same I cancelled because they were taking too long to reply as to when they device will be replace. On the 21st of July I called to make sure that everything has been cancelled from their side so no debuts can go off on the 25th. The service was so horrible that when I asked to speak to the team lead I was put on hold for over 40mins.

Fast forward to September 8th 2017, I don't have the phone yet I'm still getting debited. I called again to cancel and I got sent a confirmation email that all has been cancelled and my debits will be refunded. 11 September I get an SMS from FNB connect. BUT WHY BECAUSE I CANCELLED!!!!!! 12 September I call AGAIN, Smart device says It's FNB Connect who must cancel, FNB Connect says smart device, after being transferred between 5 agents (Who's names I have) I'm told to wait for an email.

I HAVE HAD IT WITH FNB!!!!!!