I am trying to get itemised bills for my interfaces. I encountered quite a resistance. My phone calls left unanswered. I have two open tickets now with only question asking for bills in writing for my interfaces. One ticket is from August 2015. No answer whatsoever. I told them I was going to complain, they still would not provide bills. Does anybody have a similar problem? I talked to Quest and Labcorp. They all said that AC can not charge for their interfaces. In fact they thought I misunderstood something.