No matter what type of business, organization or team you lead, teach your team members/employees the need for and importance of internal customer service.
Similar to external customer service, that means employees/team members should:
1. Return phone calls on a timely basis.
2. Answer e-mails.
3. Be polite.
4. Probe to discover how else he/she can be helpful to a co-worker.
5. Be respectful of co-workers.
Lead your team in providing excellent internal customer service. If need be, make internal customer service a discussion topic at your next group meeting.