Who called from 2106721056

Caller id had san antonio, tx  didn't answer it and they didn't leave a message.

Picked up as I was expecting a call but other end dropped call without saying a word. Guessing robo dial

Recorded voice of Lisa from the Green Service Survey Company. Said I had been selected to receive a free cruise. Hung up at that point.

Robo Lisa congratulated me for being selected for a free cruise to the Bahamas just for completing a short survey.  Yeah, right... Scam.

Same as everyone else-spam. I entered it in True Caller so I'll never have another call!