Internal and External Customer Service

Internal Customers
Internal Customers are the people who work inside your company, and rely on you for their services, products and information that they need.
They are not traditional customers, but they need the same tender, loving care you give the external customers. Customer service should be part of your own and organisational culture, regardless whether they are external or internal customers.
Customer Chain
The relationship between internal customers and external customers are what forms the customer chain. (also known as the customer service culture within the organisation).
How can you expect employees to treat customers with respect if no one treats them with respect at work?
The quality of service that a company provides to its customers is a direct reflection of how the staffs of the company treat each other and is treated by their superiors.