Random people messaged me acting like they knew me?????

A couple guys added me on Snapchat and sent me a video acting sad cause I quit my job

They work at the subway next to my job (which I been there before but don’t recognized them)

Apparently my coworker gave them my Snapchat because they were asking for me at my old job but I have no Idea who they are

I didn’t want to be rude and asked them who they are so I went along with it