MTN ****mmed me my device!!!!

I had a contract with MTN in 2015 I also took insurance for the device then the device screen cracked when I took to MTN they said they taking it to be fixed they brought it back but still the screen was not fixed they wanted an extra R500 which I took out but still they didn’t fix it till today 2023 I have no tablet no refund of the money I tried going to attorneys but I got no assistance MTN is a **** with their insurance I finished paying for the device and they still have it!!!