Failure to assist with a sim card swap

I went to get a phone upgrade yesterday (08/12), and perform a sim swap. Neither Mtn melrose arch nor the call centre employees at the 808 (of which I spoke to 2) number seem able to process a sim swap for me. This after repeatedly requesting the swap to be completed, in person and over the phone at the melrose arch branch, after a 24 hour period. Subsequent communications with ladies at the 808 call centre were fruitless. I was bounced around from person to person, only to be told that i can only process the sim swap in store. However, the Ladies at the melrose arch store say that Mtn sim swap is down, and that it would be faster to phone 808 and do it myself. This does not work. <br> <br> In this time frame, I have recieved a message from Mtn on my old phone, saying that my Sim swap has been cancelled. So now, I cant be helped by the 808 call centre