Visit their website at www.zipcar.com/en-gb/contact and fill out the contact form. 2. Call their customer service hotline at 0333 240 9000. The line is open 24/7. 3. Tweet to their customer service team on Twitter at @ZipcarUK. 4. Message them on Facebook at www.facebook.com/ZipcarUK. 5. Email them at member.services@zipcar.co.uk. 6. Chat with a Zipcar representative online by logging into your account and selecting "Help" from the menu.