they were really aggressive about a debt, i have filed bankruptcy because of a business failure and he started calling me names

good quote

At 2:10 pm I received a call from this number. When asked to identify himself and his organization, he would only give his first name. He became quite aggressive, almost threatening, telling me I 'must' provide personal information.
He refused to provide a reason for calling.

It was only by using google, not 411, that I was able to identify this company.
I've reported this to the local police and Phone Busters.

simple solution, don't spend money you don't have!

Who called?

This number belongs to NCO Financial. They are a collection agency and not the most honest company on the block.When they call I tell them I have no outstanding business with NCO and that if they feel I owe money to please contact me in writing.  If they ask me for an address I tell them that if their concern is legitimate they already have my address.  :)It is more difficult for collectors to lie when they contact you in writing. This is exactly why I insist and why they don't like to.