Who called from 7188122012

Called 6 times in the past 2 days.  No messages.  Caller identified as Nancy Cruz.

Caller ID displays the name Nancy Cruz and since I don't a Nancy Cruz I didn't answer.  Calls started this week with 3 calls a day.
Yesterday on the second call I picked up and said hello Nancy didn't say anything so I hung up and about 2 hours later they called again.

Just received it too, this is yet another "Cold Call" to be entered into my 'PhoneTray' list to be blocked!