if I won WHY HAVE I GOT TO PAY ANYTHING?

A man named Michael Anderson got my unpublished # and said Joe Martinez had lied to me and had me sending MG payments for a 500K check I had won when in fact Mr Anderson said Martinez lied I had won $2.5 M and a 2016 MB CLK
63 AMG and a $205k 1700 sq ft house in BEVERLY HILLS CA? LETTER SAID AUTOMATICALLY ENTERED WHEN I HAD BOUGHT AN AUTHORIZED MANYFACTURERS GLOBAL PRODUCT ( NEWS TO ME!) GOT EMAIL 6 PAGES OF DOCUMENTATION LETTER SHOWIG PICTURE OF ALL PRIZES INCLUDING CHECK IN MY NAME FROM BOA!!