Brokerpriceopinion.com First Valuation nonn-payment scam Westminster, Colorado

I was contacted by Brokerpriceopinion.com to take 4 pictures (front, street, side and address verification) of properties in my market area.  I took the first order in Sept. 2012 and continued to take orders till Nov. when I called to ask them when I was going to get paid for the orders I did in Sept and Oct. I was told they were billing out a couple of months. So, I continued to take orders until Dec.  when I called again and was told by my contact - that she would check to see what was going on.  I continued to receive calls but refused the orders. I received a phone call in jan. 2013 that the check was being cut to me on jan. 18th. I did not receive the check by end of Jan and again received a call stating that the check was in the mail. As of 4/8/2013 i have still not received a check and have stopped getting calls. It appears that this company does not pay and I have told all the other agents in my office not to accept orders from them.