My dad signed up for one of those sweepstakes back in the '90s. They called and said he won a "prize" but he had to come into view a "presentation". Went to the "presentation" where they tried to hustle him to signup for a timeshare. He resisted and they gave him the "prize", which was a knockoff boombox.
That boombox is still alive, my mom uses it in the garage when she's doing gardening. I'm pretty sure the company that gave it to us is long gone. Life finds a way?