Same thing happened to me this eve. The man with an accent I couldn't recognize zoomed through a series of questions:
Do I smoke, if I was married, where I work, how long I worked there, if I recycle, my first name etc.
When I insisted he give me the name of the firm he was calling from he said he was from "SPT Demographic Research." I googled this name, but it brings up a number of different pages, so I'm not sure which it is or if it is even one of them.
When I asked what the firm's phone number was, he said it was (403) 648-2643. I called this number, but it comes up as a number that doesn't exist. But the area code is an Oklahoma area code. Interesting considering I live in Canada.
How do I report this scam?

I got this call today and I think this is who they arehttp://sptbusiness.com/index.html

Have gotten a few calls about an "environmental survey."  I asked for the company name, she said SPT, her name was Trixie.  When I asked for the number that she's calling from she gave me my own number.  I said, "that's my phone number, I would like the number YOU are calling from please.  She then hung up on me.

they called asking if we recycle. then they went asking for the man or woman of the house was home. I said that she wasn't so he asked for the man of the house. I said there isn't one. he apologized then asked if I was the daughter. I answered yes and he continued to say "oh the beautiful daughter. well I'll call later when they're available honey"creeped me right out and won't be answering their calls again.

Oops. i meant "prize"

got a call tonight from (604) 998-8841 - thought they said they were from ESEO???Asked the usual questions as per above recycling, smoker ect ... her name was Michelle, when we got to the end end she asked for my name. When I refused to provide a name she said I had to supply one. I explained it was a survey and no name was required. She actually argued with me when I told it was MRS. and refused to give her one. After telling her she could use MRS or nothing and terminated the call, she called me back ??? Since the time was now 9:04 EST I picked up the phone saying "Michelle, the time is now 9:04 EST and you are in violation of Ontario calling laws put your manager on the line." She pretended she could not hear me and terminated the call - lol - will definitely get more info if they call again --- by the sounds of it from previous post I will most likely hear from them again