They lie! After numerous calls about my Dexcom transmitter order, they told me that they are waiting for the doctor's office to respond. I find out today that Edgepark sent the wrong information to my doctor, so the error was entirely theirs and they will not admit to that. I have been without a transmitter for 3 days now and I am not the least bit happy. Just spent 20 minutes on hold to complain, but no one ever picked up. Apparently, they do not believe in providing even marginal customer service.