A person, lets call them Alan, finds the full name and phone number of someone online (Fred) and decides to prank them a bit.
Alan texts Fred and claims to know them, saying they met a while back
Alan says that Fred gave them a business card with their name and tel number on it
Fred asks to see it
Alan sends Fred a picture of a laughing goat with Fred Surname and telephone number scribbled onto it
Fred says that someone must be trying to steal his ID and says he'll go to the police
Fred texts Alan saying he's reported it
What happens to Alan?
Alan made no threats and was not offensive in any way, he just lied about knowing Fred and where he got Fred's info from
Alan's slightly worried and needs comforting