These folks have called me now five separate times and hanging up on me. Every time I call back, all I get is the weird screeching like they are a fax machine.

JA jewelry show calling. Keeps changing their number, what a scam!

Got a call from someone asking to talk to the head of Marketing. I said I'd take a message. That offer was refused. Person asking for the name of the head of Marketing. I said I could not give that out, but would take a message. That offer was again refused. The call then ended. Just another pushy cold-calling telemarketer. It's SO rude when they refuse to provide their own contact details, but demand that you provide information about your company's employees and titles, etc

Just called again - just about 24 hours after 1st time.  Didn't answer.

Actually they left a message this time - it was an automated message from Leica Geosystems about the "Hexagon" conference.

received a call from this number at my direct line at work.  I didn't answer and they didn't leave a message.

Received call at 1:09PM PST on 3/06/2013 from the number (647) 351-8128 showing Ontario as call origin. This number is not known to anyone in household. My phone is only 1 month old and the number is not given out. We use cell instead as contact number.

Caller left Message from Robert Harkee ?  with Research - wanting copy of resume?   This is a business number they called and didn't say who they were looking for.