*********** couriers seeming unable to fid addresses

They were supposed to deliver my order from Amazon. The security in our estate advised that the driver arrived at 17:11 so I waited outside my house. Next thing I get advised by security that he left at 17:28. He spent 17 minutes and failed to deliver. Then I started to get emails from dpl. First, more information is needed". Then the below delivery failed as the customer has moved." I have been in this house 10 years, so I rep**** and gave the full information, confirming my address. " The next email asked me for my unit number! I rep**** with info again that this is a house in an estate. This morning another email saying "Kindly note the below delivery failed as the customer moved. Kindly advise if the below address is correct so that we can arrange delivery." And the address they quoted was the correct one which they had from Amazon, - Unbelievable!