STILL PAYING FOR CANCELLED CONTRACT

Hi, I've been with MTN for a couple of year but sadly cannot wait for the last of my contracts to expire so that I can move. I added another service last year August, a data only package on special, R299 for 80gigs, 40 day and 40 night use. I never received this. It was an issue for 3 months after I recevied assistance from the Walmer Park Shopping centre store to have it returned. I took it back on 4 Nov. I am STILL paying for a contracr and device (i added the device to the contract) that i no longer have. The last communication from the store was that the "issue" still shows as unresloved from their side but the courier collected it. The last communication from retentions was that they can see it was collected from the store but it has not been recevied at the warehouse. How is this still my responsibility? Why am i STILL paying for a contract that you could, firstly not deliver on what was promised and now still paying for because YOUR couriers apparently lost it?? ON TOP OF THIS, i was contacted by a ******** posing as an MTN representative and identity theft has been comitted on my name. We spent DAYS at police stations and credit beauros. And no one at MTN can even assist with properly reporting this. All I'm told is that this is an old *****ste and is still being investigated.....SHE"S BEEN OPERATING FOR 3 YEARS....you need new investigators!!!! I need the contract cancelled. Money is being taken from my account for something I do not have.