How do i contact the internal revenue service by phone? The Internal Revenue Service (IRS) administers and enforces U.S. federal tax laws. ... Main Address: 1111 Constitution Ave., NW Washington, DC 20224. Phone Number: 1-202-622-5000. Toll Free: 1-800-829-1040. TTY: 1-800-829-4059. Forms: Internal Revenue Service Forms. Government branch: ...How do i contact the patient relations department? Visit the Patient Relations page at contact customer service if you have Questions, Comments or Complaints about the hospital or the service you received. We welcome your comments. In order for us to provide the service you deserve, your comments are vital to our mission. Interactive Customer EvaluationWhat is the foundation for outstanding internal customer service? The foundation for outstanding internal customer service is excellent interdepartmental communication and cooperation. Everyone within your organization affects the outside customer, and virtually everything you've read or learned about customer service in general applies to the internal customer.How do i contact ulul staff? UL Staff can contact us via Topdesk . Please submit one call per query. You can edit / provide additional information to an existing call through 'My Requests'. Submitting multiple calls will result in a slower response time. Please refer them to this page so they can contact us through the appropriate channel.