they call every day and leave no message

Called a few weeks ago, posing as a survey. Asked questions about pets in the house, smokers and air quality. Called back last night said because I answered survey, my name was placed in a drawing and I had won a $300 gift certificate and a trip. Representative would bring out my prize certificates. All I and my husband had to do was listen to a sales presentation. Yeah, right. Skirt the legal issues by calling it a survey and then they can call you back because you've responded to their scam survey. Told them no thanks and don't callback.