What does the cwu service desk do? What we do: The CWU Service Desk provides phone, e-mail and walk-in computer support for all faculty, staff, students and guests at Central Washington University. Where we are: Samuelson, 1st Floor (7AM-5PM). How you can contact us:How do i contact the cwu postal department? Members, if you need help or advice your branch should be your first port of call. with head office? We'll get back to you shortly... You can contact the CWU Postal Department directly by using any of the e-mails or phone numbers below.How do i ereport to the cwu? You can then eReport to the CWU, after completing the NSW Mandatory Reporter Guide. Email your contact details for a return call from the CWU using the relevant email addresses listed below.