We did $400 worth of work for them in February and we just kept faxing invoices and calling . The accounting person is R. Torres. It took until April, but they finally paid after we dogged them relentlessly. PPA is also known as

http://www.courthouseservices.net/ check this out,  you may get some leads for collecting off the site.
Good Luck, $3000 is a bunch o change!