Who called from 7783735011

I just received a call and no message was left.

Ditto.. No message

Just received a call from this number at 2:40 p.m. Answered but did not hear anything from the other party.  No caller name on display.

If you call back, you'll learn that it is Ipsos-Reid. You can leave a message to have them take you off their list. They're reputable, and likely got your number from legitimate sources. NBD.

DON'T TALK to these cockroaches just blast them with a #4 dial-tone, they hang-up after 10 seconds, keep doing this eventually they move on, if you talk to them your phone # goes on a SUCKERS list.