Mobile phone repair

My Iphone lost connection to the mtn network on the 30th Oct 2015. The phone was handed in to the mtn store in the secunda mall for repair on the 2nd Nov. Not receiving any notice, i contacted mtn and after a few back and forth it was confirmed that the phone was never picked up. Phoning the store, they did not know what was going on. A special pickup was arrange for the 19th Nov 2015. I still heard nothing, going to the store to get my phone as the 3 weeks was over, the store could not tell me if my phone is being worked on or when i will be receiving my phone, the person only in my presents wrote an email to request focus on my repair. Thanks for very bad service mtn, that is recently the only thing you excel at.