Cash for Junk Cars

it is something not related to your business , it's about the guy who put flyer for junk cars on my car , he put it on my car windshield , then it sticks to my windshield glass ,this is the second time it happened , i really don't need to sell my car , i called the phone number on the sticker , told the woman about the situation and not to put any flyers on my car again , she was so rude , and told me this is like when birds shit on your car ^_^ , does this ruin your car , so funny , so please stop doing that to my car