Who called from 2034470546

Came up as Customer Servic, which sounds sketchy and I've received a call from another number using that same Caller ID tag.  Blocked.

I have been receiving calls from this number for months. There is never anyone on the other end. It is a dead number when I call back. My phone says it's an "invalid number". There is something seriously wrong with whoever is doing this.

Received a call from this number on my cell phone which is registered on the No Call List. Sure doesn't do much good.

Called on cell phone which is registered on No Call List. Doesn't do much good.

This 203-447-0546 call came in at 7:35pm-eastern.  Caller ID reads Customer Service.
Means zilch to me.  It rang 6 rings.  Didn't answer it and won't unless it gets a recognizable Caller ID and one that I have any interest in hearing from.