I got a call from this number too (289) 430-5036.  Lucky for me I pay for Call Display and never pick up the phone if I don't recognize it.  I call back only if they leave a message.  I am also registered for Do Not Call List.

Just got a call too. Dead air. Called back - to return the annoying favour, and it is busy. That's already another 30 seconds of my important life wasted by Dalton& Co., who, if he indeed is the owner of the line, just makes me hate him even more, and, participate in the underground economy further. Well done, again, Dalt.

I just called the number back & found out it's belongs to the Ontario Liberal Party,

Who are these idiots?