MTN Service Woes

My LG G4 went in for repairs, Friday - 22 April 2016, I received confirmation that my warranty assessment was approved today, 28 April 2016. I went to my MTN Store in Greenacres Port Elizabeth to collect my new LG G4 as per instructions with collection reference number. At the store I was informed that their are no LG G4 in Port Elizabeth and that I need to take another phone that has the same value. That is absolute *******, there are no phones currently in that price range that are even similar in specification. The consultant I dealt with, David, did not even try and source a phone from else where close by. I eventually spoke to the manager of the store who was also unwilling to help. The service I received was *******. Why couldn't I receive another phone that was valued to my contract. I have to now wait for a new LG G4 which will take several days (unkown days) to arrive, what am i supposed to do in the meantime, I wasn't even offered a phone to use in the meantime. I have been a MTN customer for a very long time, prepaid and contract. It is absolutely ******* service. I received a faulty phone and now this. I would like to receive a phone that has the same contract value I pay not the phones value. I have still not received a response from MTN