I added a new phone line and someone called claiming to be the previous owner of the phone number. He requested that I forward information a text message (He wanted me to forward 2 Factor Authentication information that would be sent to my new phone number via SMS). Naturally, I refused the request. I do not think that they are too happy with the refusal.
Are there are any risks I should be aware of or precautions that I should take, given that there is some 'funny business' afoot?
CLARIFICATION: The caller does not know my name or any of my accounts. If the caller is a bad actor, then he is compromising someone else's account because the phone number he called was recently issued to me and I do not give it out to anyone, because I use a call forwarding service. Said phone number has not been given out to anyone