Rang at 6.30am asking if we lived at our address and was trying to find info on the house next door ? Didn’t give name

I'd say this is a debt collector, they called regarding a friend who has previously listed me as a referee for a loan.

Caller: Kasey

Very strange, has left message for me to get a old work colleague to contact her.
When i called back she wouldnt say where she was calling from. The only thing I can think off that would link me to this person was an affidavit i did to him regards to a incident with his ex partner relating to custody battle. Maybe legal stuff?

who are they

Wanted to know the phone number of house across the street. Have no idea how they got my wife mobile number.??