21 Working Days (over and over)

An MTN advisor in-store gave me incorrect information regarding the DOF camera function (they told me both the iPhone 7 and iPhone 7+ have the function). So I upgraded my phone to the 7 via the call centre and they said it would take 21 working days to arrive...

Then the courier company sent it to the wrong city (Joburg, I'm in Cape Town)...

Then when it arrived, I opened it up only to discover there was no DOF feature on the iPhone 7, only on the 7+... So I called the call centre and spoke to the consultant who said they would collect the phone from me and give me the correct handset - they also kindly changed the contract to reflect the 7+.

BUT... it would take 21 working days for the courier company to collect the phone!

Then it would take ANOTHER 21 working days for the courier company to deliver the correct phone...

So basically, from the time I ordered the phone on upgrade, it will have taken FOUR MONTHS for me to get my phone and begin using it! My current phone is dying and lives on a portable battery pack charger - I ordered the phone so I can USE IT.

This new courier company is ******* and the call centre can do nothing but "escalate" my complaint, which has achieved exactly nothing.

I want this handset collected, and I want to new handset delivered at the same time.