Shocking service from MTN

Shocking Service from MTN. After 30 calls to MTN to deliver my phone after the upgrade was approved and finalised and no-one is able to help. All that happens is that the one department refers me to another department. I even sent MTN a mail. The problem is that my upgrade was finalised but when the courier delivered the phone the authentication failed. I was later told by MTN that 40% of the authentication failed that day hence I should ask the sales agent to ask the courier company to deliver again. And this is where the problem starts....No-one at MTN knows what to do now. The phone is in the MTN Vault as per the courier company. The Upgrades department keeps on saying that only the customer service department can help me. The Customer service department said that only the upgrades department can help me. The courier company said that they can only act upon receiving an instruction from MTN. I sent a mail to the complaints department and someone managed to trigger the process again. Made arrangements with DSV to deliver. I called the a day after they promised to deliver and they said that they came but no-one was at home. The strange thing is that they did not call me. I have 2 contact numbers. No calls from anyone that was not on my phonebook. I also have camera’s at my front gate. I asked DSV what time the driver came and they could not tell me. They could not even give me a an approximate time. Anyway, I checked the camera’s and could not find any vehicle that came to my gate. I am now trying to get them to deliver it again but no-one can help. Both MTN and DSV cannot help. If I did not take out a black Friday a deal, I would have cancelled and went to the store.