MTN COMPLAINT. GIVE ME MY MONEY BACK MTN I AM TIRED

So i need some help , My iphone 13 256gb turned off in October 2023 the device was only a few months old as I got it from Mtn in March 2023. The device turned off and did not turn on again and I took it to Mtn in October, after extremely slow service and wasting my money on mall parking, petrol and calling mtn , only to find out the fmi was still active on the device , I logged into apple icloud only to be told there is no fmi active on my account however the device still had an existing fmi on it somehow. after months of getting no service and having to find my own way to get the fmi taken off the device by sending the imei number and proof of purchase of the device to apple themselves. Once that was done the device was finally sent to an mtn repairer, it was then finally approved under warranty, I stopped paying MTN in January 2024 as I was barley receiving any updates or assistance, The store offered me other devices as they no longer have the iphone 13 256gb available. I am not interested in the devices they have offered me and they also are not able to answer concerning questions I have about taking a new device. So I decided to have the contract cancelled and I have been battling to get payment from mtn. I am now told that I owe Mtn 5500 in order to cancel the contract however i do not understand why as i did not have the device and the airtime and data was not issued to me. mtn owes me approximately R7000 I do not know where to go or how to take this further, do I need a lawyer or the police. The ombudsman has not been helpful at all. I have spoken to 100s of people at mtn to try and get somewhere but I am tired now. MTN are you really ******* are you billing me for a service i have not received. you breached your contract with me. MTN you owe me my money. the next place i am forced to go to is SAPS and the newspapers with this I am TIRED !!!!