Does booking.com have 24 hour customer service? We're available 24 hours a day{𝟏(𝟖𝟒𝟒)𝟓𝟒𝟑-𝟎𝟐𝟑𝟔))(𝗨𝗦)} . Yes, Booking.com {𝟏(𝟖𝟒𝟒)𝟓𝟒𝟑-𝟎𝟐𝟑𝟔))(𝗨𝗦)} offers 24-hour customer service. You can contact them anytime via their customer support phone number,{𝟏(𝟖𝟒𝟒)𝟓𝟒𝟑-𝟎𝟐𝟑𝟔))(𝗨𝗦)} live chat, or email through the Booking.com website or mobile app. They provide assistance in multiple{𝟏(𝟖𝟒𝟒)𝟓𝟒𝟑-𝟎𝟐𝟑𝟔))(𝗨𝗦)} languages and are available around the clock.