Shocking Product Cancellation service - I want a refund

I have been a Vodacom customer for over 15 years now. I use vodacom on all my devices, all phones, ipads, modems, etc.

I had been contacted by one of the many marketing consultants of vodacom, to sell me a wifi pocket router. I had advised the consultant that I didn't want one, but it was sent anyway. Attributing this to maybe a fault or miscommunication, received it and called to cancel the 'purchase', which i was told by another vodacom consultant was a 14 day period, but i had called within 7. So he processed the cancellation and said someone would call me to pick this up. No one contacted me, when i called back a month or two later, I was told by the Vodacom consultant that the courier said he tried to contact me but to no avail. I explained that there was no knowledge of any contact, and message of any kind. The consultant proceeded to assist me again, and we went through the same procedure, and still no contact. After a few months of trying, i went to an actual Vodacom store in Brooklyn mall, and the attendant assisted by logging a case and gave me the number to call. I called again, same procedure, no call. I have been trying to do this for at least the past 7 months now, but they just keep saying "its been logged, its been escalated, and you will be contacted", but no one does, and every time the feedback is that the courier people always say they tried to contact me, but its always false, as i answer all my calls, and none of them are to pick up this pocket modem. This pocket router has not been touched, opened of used in anyway! And I am told my account will be credited once its picked up! But they don't pick it up on purpose, so where the hell can i drop this off to sort out my account, because neither Vodacom or these courier people are reliable!!

Instead, for all these months, my account is being debited continuously, with no help from any store or consultant.

The level at which this issue has been dealt with is shocking and I cannot say at this point that I can vouch for Vodacom, as the level of service was why i stuck with Vodacom and use only Vodacom all these years. I don't want to cancel my contracts with Vodacom, but being forced to, as this is just appalling and ridiculous!