this is going to sell real dumb but I thought I had a read me file attached , how do I make a read me file??

http://www.target.com/p/disney-frozen-girls-sing-along-graphic-tee/-/A-16512649#prodSlot=medium_1_7&term=girls+frozen+shirt



that's the shirt and im sure this is my font "cookie chips"

disney used my font for a frozen shirt at target for 14.99 without my consent .how do I go about this...is it my loss?? the font isnt free for commercial use.