514-560-6973 sending text message selling event tickets, who selling my cell phone # to them

Selling discount tickets.  The bizarre thing is that I received the text mere moments after I'd typed my phone number into a Yahoo Instance Message chat with a friend.  Either that's a massive coincidence or Yahoo (or my company) has a security leak.

I've been getting this message off and on for over a year (discount tickets) but I don't know if it's always from the same number. I suspect it's Videotron, everyone else using their cell service?

Selling discount tickets and stuff