Preventice is a huge rip off. My cardiologist off...

Preventice is a huge rip off. My cardiologist office set up the heart monitor, which I used for only 1 day. Turns out my insurance, United Health Care, isn't contracted with Preventice. My doctor is on my insurance. I didn't know I had to ask, or that Preventice, who checked my insurance, failed to mention that they aren't contracted. The nurse from my doctor's office just told me to sign for the monitor. And the charge is for use of any duration, so I paid a flat fee for my 1 day. What a rip off!! :(