MTN doesn’t care!

I upgraded my contract in August 2021 and the phone was faulty, the battery would just go low on its own,I’d literally watch the battery run out while doing nothing. Took the phone back and they could not give me a new one since I had thrown the leaflet (manual)that came with the phone.They booked the phone in for repairs and after 2 weeks gave me the phone back. The problem continued and this year on the 5th of January I took the phone back and even till this day I am still waiting for my phone yet they still debit my money. A lady called me 2 weeks back telling me that they were not going to repair it since it had a different Ime number, I do not understand how that came about and I am just done with this **** of a network.