i got call from this no saying i wont a trip for 2 to florida and asking for visa expiration

I have recived several calls on my cell from this number but they ask for my dad who is the account holder for my cell but no the user.........they have alot of his info so it makes me very leary this is ridiculous and my dad does not give this number out
be ware they do not stop calling!!
also telling me he has won a cruise for 2 as per his online registration