Poor service for non delivery.

On 21 Dec i was expecting a delivery from RAM. I put my work address because during the day no one is home. 4:30 pm my parcel is not delivered. I then use the chat service on the website to do a follow up. I explained i'm supposed to be knocking off at 4:30 but here i am waiting for my parcel. Xavier told me the parcel will be delivered by 5:15pm. I waited, parcel did not come. When i logon to track it says unsuccessful delivery. Why? No one contacted me. Why have the parcel out for delivery when it will not be delivered? I explained that today is my last day at work, i am knocking off at 12 and will be away for the duration of the holidays and will be out of Durban. Rose, your agent i'm speaking to this morning is telling me i must call the sender and ask them to change the address. Why must i do that when the parcel was supposed to be delivered yesterday?