Who Called My Phone?

I got a phone call from somebody but I don’t know who they are, how do i found out who called me?

They said their name was josh but they aren’t in my phone’s adress book and i don’t know anybody named josh with that number. Everytime they call they ask me to call them back on their number, help me out please :-)

This could be a shy guy that likes you. Probably that you met. Or that went on a date with you. If this is not the case. Block that number.