The Courier Guy "mis-handles" my package(s)

Over the years I’ve had various deliveries from the Courier Guy, which have been fine. Today I was expecting 2 deliveries. Why their logistics did not combine the 2 is another story. But, my deliveries today have been a disaster. I’ve been tracking both waybills on their website for a while and they both said “Out for delivery”. Good stuff. Then I see 1 get listed as “Delivery failed attempt - No access”. What? I am sitting in my premises right now. It is a business complex there is a security boom at the front. Press the buzzer. Ask for my unit. They will let you in. Failing that, just PHONE me. I had also previously instructed, that if I am not there please leave the package with security at the front desk. So, to find out what’s going on, I try phoning the number on their website. It goes dead instantly, every time. I find yet another number on a different page and manage to get through, informing them that this is normal delivery. Just push the buzzer. I did check the delivery address, and it is correct. Then I see my second delivery get listed as “Delivery failed attempt - No access”. I have seen no attempted re-deliveries. You have this famous strapline: “We would love to handle your package”. Guess what? “I’m dying to get a firm hold on your package”. Resolve this urgently and someone just talk to me!