Who called from 3234901105

Call from this number yesterday at 5:49 pm.  Caller ID indicated it was from Los Angeles, CA.  Caller left no message.

They called me looking for my Ex which hasn't lived here in ten (10) years. They appear to be looking up information on any name related or past relations.

This number continues and continues to call me.  I have asked them to please remove my number from their list and I am on the national do not call list ... but they persist.
Guess they don't know about the penalties for repeat calling...

8 p.m. 5/27/14, did not answer

I do not have any business with this number.
They said they are calling about my mortgage which I don't have one.