No Delivery of My Study Material Collected Dec'14

My study material was collected from UNISA on 15 December 2014 by UTI for delivery within 4-6 days. Its been two months now and i have not yet received. <br> <br> I started tracking with UNISA early January 2015 who referred me to the courier company only to find out that the parcel was delivered to the wrong address. The POD sent to me did not bear my details on it or my address. I then queried this with the agent who promised to escalate the issue but got not contact after a week I followed it up again and was assisted by a different agent who promised that the parcel will be collected on 22 January 2015 and provide feedback thereafter but got no feedback until 05 February when I was told the parcel was collected from where it was delivered... I gave my work address to it can be delivered but to date I have not received the parcel. <br> <br> I have been trying to follow up but been kept on hold for a very long time.