I cannot recall the best customer service I had. I have had a family member that has had excellent customer service. I believe at the time he was purchasing a BMW. He went to a BMW dealership ran across a salesman who was so polite. My cousin must have had a million questions for the man. But, the salesmen put on a smile and answered all his questions without irritation. He gave him prices and let him even drive BMWs around to get a feel with what car he wanted.
I was very impressed at the salesman. He gave my cousin a deal on the car he bought and my cousin did not have to worry about any expenses on the car if parts failed. Overall I believe my cousin had an excellent experience as a customer.