Received email that I won a good sum of money and a few days ago that I won I Chevrolet Cruze

I have been receiving this kind of fraud messages and I wish I can stop receiving such, but since there  is nothing I can do till now, I reply them like...> "thank you for your valuable information and giving me such opportunity to live a better life but since I am ordinary man and prefer my present life, I grant you the authority to withdraw the Prize yourself and donate it to the poor and needy, thank you"