To make a reservation over the phone, call 844-382-6875 (US) or 844-307-8014 (Canada). If you have questions about an existing reservation, call 844-393-9989 (US) or 844-307-8015 (Canada). Customers with disabilities can call 888-273-5262. If you’d prefer to send them an email, you can fill out the contact form on National’s website.