Who called from 2018200770

I received a call and message from this number.  The message indicated "your request to be removed from our call list will be fulfilled immediately."  I have no idea who this is nor what call list the message refers to.

I got the same message at 2 AM.   I tried calling them back this morning to see who they were but got a voice recording that their mailbox was full

Same recording.  Our customers got 10 calls this week from this #.  ANI Name is "HACKENSACK NJ"

Same here. The iPhone has a "block caller" feature - I added them to my blocked list...

I received a call at 9:22 p.m. (Pacific Daylight Time) on August 11.  They left no message.