Poor Service Delivery

I foolishly believed in Vodacom again and thought that they could seamlessly renew my contract over the phone without me walking into one of their stores. A Vodacom call center representative called Masilo and I spoke on the phone a the beginning of Week_46 and he said the new phone and laptop would be delivered by Ram Couriers by Friday the 13th November 2015 before 12:00. Before ending our conversation ended I asked him if he was sure that he could arrange this because I don't want to make arrangements for something that will not happen. Upon calling Vodacom again on the Friday I was told the items were on their way but when I called Ram Couriers they told me they would deliver the items on Monday the 16th instead and that it is not Vodacom that decides when items are delivered. Annoyed I asked Ram Couriers to deliver the items at my work place then on Monday but they said I can only amend a delivery address with Vodacom. I then amended the address to my work address on the 13th but this morning the 16th I received a call from Ram Couriers saying that they are at the address they were meant to be at on the 13th and not the updated address. Vodacom just seems to be unreliable.