so I recieve a call from the lottery Euro Millones (euromillions, an european lottery) saying that my phone was randomly selected to participate in a contest to get some free tickets if i rpelied correctly to a question.

I know they don't do that. You can't win a lottery without buying a ticket or without participating in a contest, but i decide to see where it goes

the girl, very nicely and with some background noise (sounded like a bunch of people talking, like an office or something like that), asks me if i know about the lottery, then asks me what the slogan is, giving me two options. I answer the wrong one, and she goes

"ok, one moment *pause* yes, congratulations, it's correct and you just won -I think she said 99 tickets-. I'll exlain how this works. May I have your name?"

I hanged up inmediately. I honestly could have tried to play along and troll them a bit, but i didn't feel like it at the moment. I googled a bit after that and saw that this scam's been going on for a few years.