chet cooley,dds

Dr. Chet Cooley 601 turtle creek Dr. Tyler Texas i need to know how to file a complaint on the dentist office. I went to have my teeth pulled in the back and he filled the bottom left and right teeth in the back lower part of my mouth a week later i had an infection i called the office he told me to come in and he x-rayed the lower teeth and found under the crowns was infected so he pulled them. he then said when i filled your tooth it cracked that is why it was infected. HE still charged me for pulling the teeth after the infection was gone $500.78. I dont think that i should have to pay this because i put my trust in him to take are of my teeth......................WHAT SHOULD I DO PLEASE HELP ME WITH THIS SITUATION....