UPS - never again

Worst customer service ever. We ordered an urgent package from the UK as our main shipment by sea was delayed and we need emergency stock for the business. Well, it looks like our shipment by sea will arrive before the courier package. We know that our package have been sitting at the Kempton Park warehouse for about 5 days now, but we cannot get any assistance from UPS Customer Service. All costs and duties have already been paid to them. When we got through to the manager, she was extremely rude to the point where she actually put the phone down. And I promise, we were being courteous but insistent that we get an answer from them. The telephone number on the website is unobtainable and we have received no reply from our email to the email address on the website.