APPLE REFUND POLICY DENIED

I was trying several times to asked a refund becease the app didnt work as wel on device, or it was just bad quality app, or when i meaning to buy different app, every time i get a message that its not included in the appStore policy By that stuff, and every time when i buy an app i get a message that i download the app within 14 days i will no longer be eliglibe to cancel it...

i ask refund soon, in one day, and they denied it....

What"s the point of that Message at all...