I am in Canada and this number calls my cell phone every single day, I never answer it. It's getting ridiculous they have been calling for about 2.5 weeks straight.
I am a teacher too and the call has been interupting my classes - keep cel on for emergencies only so the first call I stopped teaching to check it out, after that I was more than annoyed to have it continue to interupt my classes!! I am in Sask. using Sask-tel. When I called them, I was told they had, had lots of other complaints but that there was nothing they could do. This also annoyed me. I would think that they should work on a solution to this issue and believe that the more complaints they receive, the higher they will place it on their priority list. It was their suggestion that I google the number and see if anyone has posted a solution. I do not see a solution here; not sure how you are getting numbers blocked as Sask-tel told me they could not do that "yet". To all service providers, I say, MAKE IT A PRIORITY.
I Started getting this on my cell during a recent vacation in California (from Canada). I waited 15 seconds and got a recording congratulating me on winning cruise tickets, press 1 etc etc. Now I'm getting it at home.