REPAIRS TAKING TOO LONG

I lodged a claim for my damaged phone to be repaired 5 weeks ago with MTN and to date the phone is still in for repairs. Initially the phone couldn't be collected because they've ran out of loan phones, specifically iPhones. And that's after I called them to check why my phone is still not collected a week after I've put in a claim. I requested that they give me any phone as I could not continue using a damaged phone any longer. An arrangement was made for the phone to be collected and for the delivery of the loan phone. To my surprise the courier company came to collect the phone but had no loan phone. I then decided to call again to check why I did not receive a loan phone as agreed and that's when I got to learn that they couldn't provide me with a loan phone because my iPhone is not deactivated, something they did not mention when I put in a claim nor when collecting the phone. I requested that they deactivate the phone and at least provide me with a loan phone but to date I'm still yet to receive that so called loan phone and the company is not even taking an effort to inform me of the repairs progress. This has caused me so much inconvenience.