Dawn wing courier - Pathetic service

Communication is shocking, telephone lines not in good working order that's why the calls get dropped, and don't get called back. Change the delivery address, and goods still arrive at original address after confirming with an agent verbally that it's out for delivery to new address. Unable to contact driver to give information over to sort delivery out - email communication only ?!?!?! Messages don't get given to management. Supervisors communication skills in dealing with a complaint is shocking.