i dont know a website but i would tell them this or write them this,
Porfavor no deje su perro en el caro. Su perro puede sofocarse. Yo entiendo que deja la ventana 2 pulgadas avierta, pero no es sufisiente aire para un perro. Porfavor no deje su perro en el caro, si sigue, tendre que notificar a un official. Porfavor entiendan que pueden ser arrestados por lo que andan asiendo bajo la officina de crueldad y maltrato de animales.
Translated : Please do not leave your dog in your car. Your dog can suffocate. I understand that you leave the window down 2 inches, but that isnt enough to let in the needed air for the dog. Again, please dont leave your dog in the car, if it continues, i will be required to notify an officer. Please understand that you can be arrested under the mistreatment of animals.
sorry i dont have sum source! and imnot surprised that their hispanic. and if they dont speak english im guessing their still pretty new. Its because in mexico, animals arent treated with much kindnesss or respect. People often kick their dogs and dont really fuss over feeding them much either. i kno this because im mexican 2. ( but i love and respect animals) so they probably dont relize wat their doing is such a big deal. just try to let them know this.
But the best thing to do is just call animal control so they relize wat a big deal this is here.
hope dat helps!