Their billing system is the worse system I ever seen. I had two blood test in one of the Quest lab and my insurrance paid their fees but they keep sending me the bills. Their customer service is so stupid they can even fix their systems. so they keep sending the claim to different collection agency. Then when I provide the EOB and the copy of the payment to collection agency, they close the case. few month later, same story again as their billing system keeps generating these bills!!! this story is repeated 3 times so far!! it is just... read full review »