Who called from 3471665870

This caller was offering $7000 in tax free money and I told him that with so many scams out there, I would want such an offer in writing. He then proceeded to argue with me saying that it was not a scam and when I asked for the address of the company he started threatening me. He told me they had my phone number and my address and knew where I lived. I ended up hanging up on him, but he went on and on threatening me. I got very scary. I don't know what recourse I have with this. I tried calling the number back with no results.

Called, but I was in the process of ordering coffee when I answered and they just hung up.

Received a call from this number but did not answer. Looked it up online and read the comments.

got call said hello 3 times .asked if this is ------ said yes hung up on

Was asleep did not answer.