888-810-6912

They contacted my ex husband if 24 years looking for me

Who was it?

It was a law firm. Turns out I was being sued and was able to settle it out of court for much less. I would suggest answering.

I am suggesting you are Shill and you are busted.  For anyone checking out this number, Kevin O'Brian is phony debt collector, hiding under the cover of "Law Firm", a cover that enables this outfit to harass and cheat with more freedom.  This a phony debt scam.  A phone call is not legal notice of a debt.
-- Kevin O'Brian has a fairly lengthy history on this site, under many other numbers.

"Roberta", Details, please.  Location of the office?  What type of debt?  What proof was provided?
You wrote "was".  If your business was so happily concluded, why are you here looking up a number that you already knew?

I'd say it was not a law firm. Turns out Federal law bars extortion dressed up as debt collection. I would suggest obeying.

LOL! You're a silly little shill, trying and failing to do damage control for your employer.

The Kevin O'Brien persona appears on several numbers on 800notes.  Engaging in several scams.    No idea at present where he is located.  More research is necessary.