Useless Company together with its employees and supplier - ****

A 1 star rating is even too much, I called MTN Direct Sales to upgrade my contract phone and it was approved on the 9th of March 2018. Few days later it was obviously sent thorough to DSV ( ****tiest Courier Company in the world), in the next week I called wanting to find out how far they are with the delivery and they said they contact number the had which was the MTN one was not going through, fair enough as the sim card was lost which is why I opted to upgrade knowing the phone will come with a new one that would need activation anyway. I advised the courier of this and they said they would need MTN to approve the new number they had to call my father on for delivery, I called MTN on the same day and a lady sent an email whilst on the phone with me to them. After 2 days, I called DSV again to find out what the delay was as a new number was sent through by MTN. The lady confirmed that they had received the email however it had not been actioned as yet, in which she said she will investigate. From there onwards, I called both companies for feedback atleast 3 days out of the working week to no avail as the phone was still not being delivered. My dad was called twice, first they called to arrange for the right day in which he said the Thursday but no one came. They called again and advised him they couldn't deliever Thursdays as the drivers are only scheduled to deliever in his area on Fridays but still no one came to deliver. Each week I would have to explain the number story to different people, come end of April I called DSV again and the lady I spoke too said the phone had been sent back to MTN Warehouse as they failed to contact my Dad for delivery hahaha. So I called MTN wanting to cancel the upgrade so that I can go do it at a store and they said I had to speak to the gentleman that processed my application think his name is Mncedisi I held on for him till my airtime ran out. Called again left my number as well as my dad's number for him to return the call to either one of us but till today I am still waiting. The first instalment was meant to be for April, I told my dad to reverse it straight away. How do you deduct money when your client hasn't even acknowledged receipt? MTN and DSV are the worst companies I have ever had the honour of dealing with, to think I have had this number for over 10 years and to only start experiencing issues now?