GUESS customer service has an excellent reputation and aims to respond to enquiries quickly. Shoppers should first use the FAQ section on the retailer store to see if they can find the answers they need regarding merchandise, shipping, Guess promo codes, and other topics. Shoppers can also get in touch via phone, Live Chat or an online email form. The Guess phone number for UK customer care is 0039 02 32116831, the line is open from Monday-Saturday 8 am – 7 pm. Shoppers can also try and contact customer services via Twitter, Facebook and Instagram.