Yep..same here..2012213968:::"no one answers..then hang up..when calling back it saysbnot a working number.

Same here! on my husband cell he got 30 call in two days from this number 201-221-3968! how do i go about blocking it?

Received call from this number.  No message left.  Still unidentified.

phone did not ring.  only recieved a blank message from 201-221-3968

When I return the call its says "Welcome to the Customer Service Department, your call is important to us"  

Do not know why they would not indicate their company on this message.  SPAM for sure.

Got two calls from this number on my Net10 phone and when you answer no one says anything and then they hang up.  Caller is now blocked.