Identified themselves as a oil company, wanted to update records, need to answer 2 questions.
Person calling was oriental sounding.  I asked repeatedly who they are, she replied they only wanted to update records.  Person would not ID themselves, and nor I have done business with them.
Person hung up abruptly as I would not answer questions unless they ID'd themselves.

Add'l info, the caller ID shows up as "A BROWN"

The person asked for my ex-husband two or three times and when I asked who was calling the person hung up.  Likewise - saw A Brown in the caller id.