Phone send for repair

I have send my I phone for repairs on the 23/07/2017 through MTN Piet Retief, I was contacted by the lady asking me to deactivate the find my IPhone on my phone she still helped me to do it over the internet as my phone is completely dead. On 5/08/2017 they phone me to come and collect my phone, when I got there my phone was still dead, she told me that she will send it back, the Monday 7/082017, I phoned the MTN repair center to asked them why my phone was send back with out repairing it, the technician said I need to delete the find my IPhone on my phone. So we deleted it over the internet again. On Monday 28/08/2017 I phoned the MTN repair centre to find out about my phone, the technician told me that they do not have my phone, he then called the MTN shop in Piet Retief just to tell him that the phone is still with them, cause they cannot send it away due to some system that does not work. I then called Adelaide at the Newcastle office and she said she will follow it up, when I phone her Tuesday 29/08/2017 to follow up she told me she is still busy, and will phone me as soon as she had an answer for me. I then phoned her back on 31/08/2017 cause I still not received feedback from her, she then told me that MTN has changed courier companies and that is why there is a delay, I think this is very poor service by MTN, I am now 6 week going for 7 weeks without a phone, and was just told they are trying there best, in the meantime I can not access my documents on I cloud due to a verification number that is send to my IPhone. I just want to tell everyone that MTN went from one of the best service providers to one of the worst in the business. This is not the first indecent at this store and nothing is done by the *********** persons working there. MTN only sometimes comments to these postings and then they still do not sort out the problems.