Who called from 9254294836

This phne number 1-925-429-4836 on may 21 08:05 pm, but We don;t know how is
this person................

They hang up when I answer

they called, no voice mail - no answer

Called at 3pm Aug 5, missed call no message.  On call back their box is full.

925-429-4836 called 08/08/09 at 12:03pm. I answered on the second ring without looking at caller id. No one there. We are in the 415 area code and 925 is just across the bay.