COMPLAINT - Terrible Service

I am having trouble with my mobile..could not receive any calls etc. So i took my phone to the MTN Shelly Beach Store with is owned by Harris Cellular(Franchise Owner) and was assisted by Joash who said to me that the sim seemed ok and the phone was fine so he would suggest i do a sim swap but because this is a companies contract i woul require the letter from the owner giving authourisation including his email. I am the owners wife so i got everything together and brought it back to the MTN Shelly Beach store (27/07/2018) and was again assisted by Joash, he filled out a form and said i needed to pay for the sim swap..so i did. He said it would take 24hrs and all should be fine. I did what he asked to do and waited and eventually switched my phone on after 24hrs to see that the swap was never initiated. i contacted MTN shelly beach telephonically and Joash said he will escalate it and get back to me of which he never did, I had to call back. Every time i called he said he woould check and let me know. Then i called 31/07/2018 at 8.30am and Joash said he will check and let me know by 12pm..because his system was down. I called back because he did not call me back to find out that he had left for the day. I was very upset and spoke to Margot who said she will check for me, she contacted me and checked that Joash did not even log the request. So she said she will do it i should just swith my phone off again and on in the morning and it should be ok..I cheacked 01/08/2018 and still nothing no swap done..so I asked a lady by the name of sharmaine who answered my call, she said Margot was busy she will call me back. I asked her for the owners details, the owner of Harris Cellular, she said they do not have those details with them and that I am not allowed to contact the owner. I said i am sending my husband to the store to sort it out because it is his business contracts with mtn and we NEVER had issues with Tyron that worked at this store before. I got a call 15 mins after that from Margot, I told her my phone is still not swaped over, she says swith off for 2 hours and back on...we run a business, there is not time to keep on switching my phone on and off just because people dont know how to do their jobs. I have done a sim swap before and i did not have this issues before...can i get feedback asap regarding this. call me ********** 294 or email **********