Horrible horrible cancellation service, *****lent billing system and call center not helpful at all. Empty promises

I have ordered a cell phone online on the Telkom website in November 2018, the day the cellphone was delivered I realized that that was not I wanted. I then called Telkom the same day to come and collect the phone and ever since November 2018 I have been calling every week without fail but up until today I still have the cellphone in my possession. I have been sent from pillar to post and I have been promised that the phone will be collected within 48 hours every time I call. I have called the 10213 and the other 081 number on weekly basis since November 2018. My biggest worry is that Telkom is debiting my account every month with ridiculous amounts and I don't understand what are they billing because I have never used or activated the phone. please assist, I'm in the verge of loosing my mind as I have to reverse debit orders in my bank account on monthly basis of which has a very negative impact on my credit record and the bank charges that I pay every month because of Telkom.