Dealing with a very bad kid messing with our cars! Please, please give us some insight!!!!!?

My husband and I are sick and tired of this bad *** kid in our neighborhood. We have lived in a gated apt complex for 1 yr 1/2 have an issue with a paticular bad *** kid! About 7 or 8 mo's ago we caught him sticking his hand inside one of our cars trying to take something, my husband went to his dad and he was disciplined. After that we kept finding stuff on our cars. White out on our SAAB, tape on our keyholes and bricks under our tires! (BAD *** KID) But since we never saw the kid do it, we could not blame him. Yesterday it snowed and my husband caught the boy throwing snow onto out cars. So he went outside and yelled at him. His mother was near by and apoloigzed, yelled at her son and made him apoligze. Now she wants to file a complaint against my busband for yelling at him>???? What would you have done in this situation? My husband said that he wanted to scare him ,so that he would stop what he has been doing.