DSV South Africa does not deliver as they claim to do

I made an application for a new contract phone with MTN in November and it was approved and was also informed that they device will arrive within 5 working days from the courier DSV cape town. They only contacted me once and when i tried calling them i ahve been put through so many call centre agents and un ending emails but i still have not recieved the parcel. I sppke to a Dineo and she advised my parcel was put on hold and i must contact their call centre to arrange for delivery again. I then called MTN who assisted me by updating and transferring me to DSV again and they **** again to say they will call me the next day for delivery, when i phoned them the next day i spoke to a different agent again and she advised that my parcel was returned back to joburg, i am very dissapointed in their poor service delivery and the lies and promises from their agent to say they will back but they never do, i had to spend my airtime to make countless calls with no help at all. this is the worst delivery ever as i wanted to cancel and apply with a different company Order# ***