I got a call today, no VM but I called it back to get my name off their internal list. took me 2 seconds-redial the number and option 2 is to be put on their internal DO NO CALL list. Says it may take up to 5 days to get off the list.
Just got a call from that number on my cell phone. Like others, I didn't answer and I'm on do not call list. You should not call them back to request being removed. This only confirms to them that the number they called is a number with a live person on the other end. Very valuable to them. Maybe they won't call back, but they will re-sell your confirmed numebr to other pests. Instead you should file a complaint with FCC. Here's a link: https://esupport.fcc.gov/ccmsforms/form1088.action. I do this for every unwanted call. The more complaints, the worse it will hurt those jerks when FCC track them down.