very strange and suspicious.

just had a call...  Didn't ring for long and then missed call.

Googled this up!

They called me at 10pm wanting to do a survey who calls that late at night considering it's a Toronto number and where i live there is a 3 hour time difference. That means it was 1am in Toronto

the national do not call list is for telemarketers, the exceptions to it are companies you have an existing relationship with, newsapers, and charitable organiations. Companies doing surveys don't fall under this program because they are conducting research, not trying to sell you something. as for their internal do not call list, it depends on the company doing the research and who has hired them to do the research. Policy can be different from company to company. Some comanies put you on do not call as soon as you tell them, but less reputable ones will just hang up and let your number stay in their database and will keep calling.  You can try telling them that you work in market research, cause that usually excludes people from taking part in a survey. If they are really annoying try to escalate the call by asking for their full name and to speak with a supervisor. something else to remember is that in general the people calling you and the company they work for do not create the calling list, it is usually provided to them by their client.

p.s. these guys have started calling my house as well.

I get calls from this number almost everyday.  One time I picked-up and the woman is conducting a survey about banking institutions. I said don't call my number again, but the number keeps appearing in my caller ID.

It's called a coincidence?  All of their stupid surveys are done from random numbers.