DTTAM: the heart doc sent me a bill last month for the monitor I wore back in November. They don't allow you to pay online, so I wrote a check and mailed it. I got a past due bill today, so I looked and yep, they haven't cashed my check. I've been trying to call them repeatedly and their phone always shows busy. Who doesn't allow you to pay a bill online these days? It's 2021.