If I could give this monitoring service no stars I...

If I could give this monitoring service no stars I would. My cardiologist had me use this heart monitor for a week. The second day one of the monitors quit working. I was told they would overnight a new one and 2 days later I still haven't received one. The monitor I used at night woke me up to tell me the battery was dying. This monitor will definitely make your heart rate go up! Can't wait to see what happens when I refuse to pay for this piece of junk.