Service Desk
Of all of the main sections within ITIL, the service desk is the only one which is commonly referred to as a department as opposed to a process. Either way, it should be the single point of contact of your users for all of their IT issues.
Introducing the Service Desk (Outlining how a small business could benefit from having a named contact to manage your IS issues)
"ITIL® is a Registered Trade Mark of the Office of Government Commerce in the United Kingdom and other countries"
Providing Affordable IT Management to SME's 