MTN - THE MOST USELESS SERVICE PROVIDER IN SA

My mom has been without a cellphone for 3 weeks. We signed up for a UYO contract and ported her number from prepaid as I was concerned for her safety without 24/7 access to a phone. So much for that. Firstly, the salesperson at Greenstone gave us the wrong size SIM even though we had the iPhone with us. We had to go back and spend yet another hour trying to sort it out. We waited for it to be activated but it still didn't work. My mom went to the Greenstone branch who fobbed her off with total lies that she had used the data up. We checked and confirmed that no data had been loaded. I went into the Sunninghill branch on Monday (after two weeks of trying to contact the call centre who NEVER ANSWER THE PHONE EVER). The salesperson Andre told me they had selected the wrong contract and not included the free minutes, data and SMS. He logged a manual request for this to be rectified. 5 days later AND IT IS STILL NOT WORKING, I tried calling the number this morning and it now says that the number is not available on the MTN network. I have tried calling Andre at the branch but they do NEVER answer the phone. The website is non-functional and the call centre don't answer. *** MTN?