PANGKABUHAYANG HANDOG para sa mga OFW's by YUCHENGCO FOUNDATION,is this a scam or what?

regarding my first question,,i received a txt msg again from this no.+639091353101.and here's the content of the txt.,You are advise 2 call now!Finance department,ATTY.CLAIRE ESCUDERO.She will be the one 2 assist for claiming ur prize.contact#09309405343....and here's another txt msg from 09309405343,,you are scheduled to claim your prize today,pls coordinate with us properly to avoid delay..call immediately!,this Claire ask me to send P12,000 pesos thru western union for the service charge and so that they can activate the control number,and here is the receiver's name ARIEL ALLEN CHAVEZ,#73 STO.DOMINGO ST.MAKATI CITY...