Worst service from MtN and Mondo (RewardsCo)

I took a contract (Iphone13) via Mondo in August, I received the phone on the 21st of August and 7 days later my phone was dead. I took it to V&A and they advised me it will be returned to the warehouse for repairs. Long story short..... Mondo canceled the contract, they deducted R774 for a phone that I don't even have. It's been a nightmare because between Mondo and Mtn you will get different stories. I have wasted my time, money trying to call them everyday but I have not been assisted until today. When I tried to re apply I was advised that I can only get a sim card. It was never my fault from the first place I never said the phone must be faulty. MTN service is a minus Zero because their customer care only come back to you after 3-4 days only to tell you nonsense. It's been the worst nightmare