No Delivery till today

Hi, I had a delivery of my LTE device and SIM card that was supposed to be delivered on the 25th of Sep 2015. It was confirmed with me that it will be delivered I just need to bring my ID and it never happened. Last week Friday I got a call from my old work address (12 Corobrik Road, Meadowdale, Edenvale 1610 ) that there is a delivery of my goods and I told them, I no longer works there and to give them my *** since my *** number is suspended at the moment. I tried calling UTI call centre. They say they cant help me because I don't have a reference number and MTN says they cant track from their side I will have to wait till they return the goods to them. My problem is why cant they use my ID number or my full names to check the tracking no so they can trace it back. Firstly it their mistake coz it was not delivered in time. I understand tracking no is easier to track with but other options in case like these should be available for super users to track the goods especially if the SLA is not met.