Bad Service

I would like to share my thoughts about MTN South Africa. I have bought a brand new Samsung s6 which is NOT CHEAP, on contract with MTN. I have since then had to return the phone as there was a problem with the software. I was told it would take 7 days to get my phone back. Here I am, 18 days later, stuck without a phone. I have received no feedback or response from MTN unless I phone THEM! I am paying for a phone that I don't even have, no temporary replacement phone, nothing! The last time I called in, they told me that the phone is there in the shop, just sitting there, and they cannot release it because MTN head office needs to supply them with a reference number! I am very unimpressed and totally discussed at the service that I have been given, especially since I have been with MTN since I first opened a contract, even with bad service and reception, not even supplying the gold Samsung to the public (when Vodacom was, and this is the phone I wanted!) I refused to port, I stuck with MTN and regret my decision!