Victimised by MTN

Good day I regret trying to do business with MTN, my life is a misery because of this company, I returned a device last year in December, still no cancellation and I get debited every month while the device is back at MTN. Tried calling the call centre I do not know how many times, either the staff is rude or they send you from pillar to post. I have sent emails, massages via Facebook but no action is taken all I get are invoices. This is Abuse!!! Am paying every month yet I don't even have the phone. MTN is ******* and misleading. I just want my name cleared. You have the device, I have also been to stores and was instructed to deal with the online team. My experience is that they rude unprofessional and ***********.