Well since I’ve been mostly in customer service jobs I’d like for people to know that the reps don’t make the rules or decisions. When there is something about a store or service that’s undesirable such as prices then it’s something to bring up to upper management or just let them lose you as a customer. But you can be as nice to the reps as they are to you.
If you can look people in the eye and make them laugh, while also maintaining relationships long term: You will likely make the most money and have the best life in sales, regardless of industry.