Had the exact same call. I called back with a bogus number, still said I was selected for a 7 day trip to Disney and Daytona.
I couldn't put up with it any longer and hung up

Same as the above message - Betsy from a travel company - invitation for me and 3 guests etc.

I had a missed call from this number and they left a voicemail message. Said she was Betsy from the department of travel with an invitation for me and up to 3 guests for a 7 night "familiarisation trip" at a premium resort. She provided a confirmation code and asked me to call back on (08) 7078 3685 as soon as possible.