Refusal for premature upgrade and paid for a Sim card that doesn't work 24hrs late!

I recently lost my phone on Saturday and I'm on contract it's been over a year since I've been paying this contract.. I went to the maponya branch to enquire about premature upgrade as I'm in desperate need for a phone and was told Mtn doesnt do that anymore cause of "complications" which I'm battling to understand cause I was will to pay extra.

I then asked for a Sim swap which I got charged a ridiculous R115 for it and was told I would be active after 2 hours, it's 24 hours later and my Sim is still not active. I have called your customer service countless times to check the status and have been advised NO request for a Sim swap has been loaded, I then asked if I can do it over telephone and again I was given a NO and was told to go back to the branch.

I cannot go to the branch cause I had to catch a morning bus to Durban I then went to the Mtn in park Station and was told I have to go back to that branch if I want this sorted or l should pay another R115 for a Sim swop only for him to tell me they don't do only Carlton center does Sim swops.

I'm currently a very unhappy mtn customer that will be debited close to R900 with no phone nor Sim card. I have been trying to call the maponya branch but all numbers I find are either out of service or just rings, your customer service is utterly useless!

My useless number in question is ***.