Worse service ever

My wife took in her phone for repair of the screen, sometime last year in October, upto this day we are still struggling to get the phone back. First we struggled with Mtn, not know the status of the phone as to where it is. Now we are struggling with their delivery people who don't communicate when they come, they only call when they get to the gate and when u ask their driver to wait he leaves. How many times do they want to do a turn at my gate I don't know, but this is irritating. Claim number was ***, mtn ***. The phone is a contract phone but now we have about 5 months of the 24 months without using it and they didn't even give us a courtesy phone during this period.