I'm not sure how legitimate they are, but they sure are desperate if they need to go through some very elaborate way just to sell some vacuum.
1. Some guy shows up the door and takes some random 3 question survey with completely NO relevance.
2. Some call comes in reminding me of the guy that came and that I "won" a prize and that they would come over and deliver the "prize" to me...heres the catch... the person coming HAD to come in to my house to plug in something!
3. I said no thanks. Nobody comes into my home; and the caller just put the phone down right away. Prize gone!
Gift was insincere.

I got the same call and they said it was no catch ! I called back and told them not to show up here , its strange they already knew where I live

They called again I warned her not to call she got rude and hung up. I called back told them I'm calling the police last warning.

Puretek will get a telemarketer to call you asking you survey questions and then in a weeks time call you saying you won a prize.