I received a call from this number at 4:45 yesterday afternoon. I didn't answer, but when the answering machine picked up, the caller hung up. My caller ID shows United Voice Mail.
7/3/16 (Sunday, 10:15 am) Phone call from (213) 534-1824 from United Voice Mail. Rang repeatedly. I am glad I did not answer or allowed it to answering machine. That will show them that my telephone is not in service.