Who called from 7202590518

Keeps calling me, no message, I don't know who they are

# keeps calling me, I don't know who it is so I don't answer but I registered my # with the do not call list so I am annoyed

Called the number back and it says thank you for calling our college.. I hung up

this number calls St least once a day ..does not leave a message I think it is telemarketing g for some higher education school.

I have received a few calls from this number.  There is no caller ID and they never leave a message.  I Googled the number and found the number is assigned to a law firm in Broomfield, CO.  There is no reason for them to be calling me.  It is always surprising that businesses do not have caller ID; it makes them look shady.