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

Hey my mother, just got this call about her owing some money but i have no ideal what they are talkin about does anybody now what this is about she was really aggressive and was treatin my mother what kinda of agency is that

This call centre called me and left a voice matter about "some urgent matters" for (individual with same first initial J but male - I am female) and the correct surname. Nice try. When I demanded who was called the stupid girl with a Canadian or American accent got nervous and hung up on me!

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.

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.