Just got a phone call from this number. Unfortunately I used my name when I answered (I don't usually do this as I know there are scam artists who are always looking for personal info), I usually I just say hello without giving out any info that can identify me to an "unknown" caller. There was no response after I answered - the caller hung up.
I have tried to call back a dozen times, but the number returns a "busy signal". My guess is this is another scam artist looking for valid mobile no's or personal info to use in a future scam.