Please advise them to contact us at VueContactus@ellomedia.com with as much information as they can regarding any difficulties encountered using the vouchers alternatively you can email VueEnquiries@ellomedia.com and provide; the relevant voucher codes, the date, time, and location of the booking, and which film the booking was for also.Please note our Customer Service open hours are Monday – Friday 9am - 5pm (excluding Public holidays)