Customers expect options. Customers don't want to be told that there's only one way or one solution. They'll respond positively when they're given options. Options are essential because they create dialogue and discussion. Open dialogue can lead to more sales.
Customers expect single source service.
Customers don't want to be transferred to every unit of your business to have their problems solved. They want to be able to do business with you with the slightest amount of discomfort. You must be easy to do business with. This means taking ownership of your customers requests, problem, etc., and ensuring that their needs are met to their satisfaction. Customers expect superior communication.