Your (potential) customers should be able to contact you for information, for ordering, and for after-sales support. Your (potential) customers will include both Deaf people and hearing people; they should all be able to contact you by text-telephone, telephone, fax, and email. If your productions include 'new media' such as CD-ROM, DVD or DVD-ROM, users may need technical support.
Customers and potential customers should be able to contact you with questions about your productions and should be able to do this by text-telephone, fax, and/or e-mail.
If your productions include 'new media' such as CD-ROM, DVD or DVD-ROM, it should be very clear on the outside of your production what hardware is required to play these media. Customers with installation problems will want to contact you, preferably 24 hours a day! If you can't afford a full-time helpdesk include on the cover of your production how and when users can contact you.
If you have a website, include a section for 'frequently asked questions'. Use visuals to support the questions as well as the answers. Translate questions and answers into sign language and publish these videoclips on your website.