"Dave" from Arrow Electronics left a voicemail saying that he had a few quick questions on the behalf of TI about my recent order (from TI).  Haven't called back yet.

Caller ID showed "HALIFAX   NS".
Not sure why I'd be getting a call from Arrow or any other distributor in NS.  
I am an engineer but there has got to be lots of Arrow offices closer to TX.  
When I answered on the 3 ring the other end hung up.

Perhaps they are calling just to listen to the answering machine greeting.
If the greeting has your name, they can call again, when you are there to answer,
and now they can ask for you by name.

They keep calling my cell phone 2 or 3 times a day. I don't answer because it would cost ME money. I have a strict policy to never answer calls from numbers I don't recognize anyway.  I am not an Arrow Electronics customer nor have I ever been, and although I do live in Nova Scotia I am nowhere near Halifax. To me that says this is a scam because why would they be calling me if I am not someone they have done business with? This is so ridiculous, ever since I put my name and numbers on the Do Not Call List I have been getting 10 times as many of these calls ... what are those people doing because they sure aren't stopping these people from calling me repeatedly. The Do Not Call Registry is the biggest scam going in my opinion, I am starting to wonder if they sold my phone numbers to anyone who wants them...

They call, listen to my greeting on the answering machine and then hang up.
Several times each day.

Shows up in Caller ID as Nova Scotia (the phone company is reponsible for this as it is international).Called because I was signed up for a seminar they were co-sponsoring for a µP company.

THEY SAID THEY WERE ARROW, AND CALLED BACK AND ONLY ANSWERS BY NAME, BUT DOES NOT RECOGNIZE AS ARROW ELECTRONICS...THEY ARE MARKETING COMPANY TRYING TO GET INFO...CALL ARROW ELECTRONICS.  THEY DO NOT RECOGNIZE THIS PHONE # AND IS NOT THEM...