Where is their telephone number so that we can get...

Where is their telephone number so that we can get help on bidding?This is not user friendly. Even when I can get into a file to bid with 2154 pages, it doesn't tell me which page to look for to see who needs my product. A simple category for paint spec'd could take 4-5 hours to find. And again, no phone number to call for assistance. Working directly with the contractors works better for us.