Samsung Repairs lost my phone

I bought a Samsung flip 4 on contract with MTN at Mall of Africa in October 2023. In March 2024 the phone started giving me problem so i took it back to MTN for repairs because it was still under warranty. On the 9th of April 2024, Samsung repairs sent me an SMS saying my phone is repaired and will be dispatched to the store within 4-5 days. Till now i am still waiting, every time i call, i am told next week than the following week the same story again until i got fed-up. The thing is if i don't call them, i never hear anything from them and mind you its been two months paying for a phone i am not using. I got upset on Monday and i spent half of my day on the phone demanding answers and eventually i was told my phone is missing and they will have to conduct an investigation. In all this mess Samsung repairs doesn't want to give me a loaner phone or a phone i can use since i am stranded at the moment without a phone, they are telling me i have to wait till they finish the investigation process on their side, well remember its been two months without a phone and I'm still paying. I didn't loose the phone they did but they are not even willing to assist me in anyway to at least make my life a bit easy since they lost my phone and they just don't care about me as a customer who is paying for a device they lost.