Called here 3 times in 3 hours today. No message. So annoying!Call Display just says Ontario.

Me too.

For the past 3 days, this number has been calling me.  Not once have they left a message.  
Nor can you call them back, it appears to be a one-way number, typical of these arseholes.

Best solution so far: get a new phone with a call block feature build in, they're supposedly pretty common now - Panasonic.  I'm going to consider getting one myself, so at least the phone won't ring when the offending number calls.

I think many times, these jerks are acquiring numbers from internet companies, numbers that can be called out, but not back.  A royal pain in the a**.

got a call from 1-(647) 724-2910. call display also reads "ontario".the message was about winning a free cruise ti the bahamas, but I would be responsible for fees and gratuities.

Again another one of the pests that just wont go away.

When are they ever going to stop???

Has called every day, sometimes twice a day for the past week. No one says anything when I answer. Wish I knew who it was.