The terms and conditions are clearly shown on all of our vouchers. If you think your order should qualify and the voucher hasn't expired we'd suggest calling your local Hut, and they will be more than happy to help.
Or alternatively for more information you can contact our Customer Care Team here - https://customercare.pizzahut.co.uk/hc/en-gb
Or we have our Live Chat available from 2pm - 8pm.
A reminder that most of our vouchers cannot be used in conjunction with other deals, so if the voucher has not worked correctly I would advise to also check your order and items in the basket.