Whatever happened to Customer Support?

Not only is the customer no longer right, frequently the customer is wrong. And, what Grinds My Gears, is when two customer service reps contradict each other. For example, I traded in a car. I was told NOT to turn off the automatic payment, as it was my responsibility to make sure the payments were still handled until the dealer sent in the paperwork. When I complained about the fact that they took out the last payment (not only that, the last payment was supposed to be $282 and they took out $330), they told me it was my responsibility to turn OFF the automatic payment. This despite the fact that the other rep told me not to do it!