Horrible experience taking my truck to get service...

Horrible experience taking my truck to get service. I'd called to make an appointment and when I got there I was finally greeted after waiting for 10 mins while the employees chatted away. Then because I didn't remember who made my appointment I was treated as if I couldn't get any help by the supervisor name Al. He had the worst customer service I ever seen. I was told to wait while a gentleman got another car for someone who had been waiting and he took 25minutes to do so. After that I left and still no one talked to me and asked why I left.