Just an Idea

I was thinking , for a long time now I have been with the PLA (Phone Losers of America) and one of the pranks we run is “changing” a persons phone number either due to someone out bidding the owner or some other absurd reason … how about making some calls as their telephone provider asking for the owner because the phone number is going to be changed and we need to talk to the owner before it happens. this might social engineer more info and give insight to weak spots in the set up . ?