Non delivery

I was due to receive an upgrade from Vodacom. They advised RAM Couriers would phone before they came out. I advised I would not be available to receive the parcel on Friday. RAM arrives at my home on Friday calls on my number and informs me they are outside to deliver a parcel. I inform them they are too early I advised I would be unavailable. I was still in hospital. They advise the will deliver on Fridsy once I am discharged. I call on Friday as the email reflects a number not in use and the RAM delivery agent says he knows nothing about the delivery. He does not have my parcel. I call the office and they say they are calling me on the number not in use. Why? I ASK WHEN previously the number I am being upgraded on is the contact number used. Those are the details they have. Makes me wonder what on earth is happening. They called the correct number previously. Suddenly today when they must deliver they use a number not in use.