877-353-8372

I have had 877-353-8372 keeps calling me  I do not answer them.. I also wish I could block these numbers on my cell phone.

Look into Google Voice (free).  By setting Google Voice as your voice mail provider, and by assigning such callers a silent ring tone, you can pretty well get them out of your life.

Called today during work hours so I did not answer, no voicemail was left, so maybe it was something legitimate.

It just says that it's "Customer Service" and does not indicate what company they are with. It keeps saying all representative are with customers and then asks you to push 1 to stay on hold or 2 to leave a name, number, and message. No one ever picks up.

always call me early morning , and midnight, please let me sleep

Got a phone call, I let it go to voicemail and they didn leave a message. When I called back later, I got the same response as Mary.

I got the same thing. Called back.. "customer service"... "representatives busy"... Doesn't matter if I answer- it immediately hangs up; making me want to call back to find out what they want! (I never call back on the phone they originally called, I don't want it to be traced back to that number)