Who called from 9786446068

No message left.  Call back indicated "call cannot be completed at this time".  Called me 4/24/2017, mid afternoon.

Called my cell.  Didn't pickup.  No message left.

No message left. Called it back and it said "welcome to Verizon Wireless" You call cannot be completed at this tme

Has called multiple times but never leaves a message. When I suppress my own CID and call the number, I get a rapid busy signal.   Some kind of spammer. using a spoofed number.  The 978-644 exchange does not even appear in the list of valid exchanges for the 978 area code.

Received a call from 978-644-6068.  I did not answer.