Bought a mascara and foundation in Boots earlier, they were doing a promo if you buy two items you get a palette with it, lovely. Only when I got to the car did I remember I had one of those No.7 spend £20 get £10 off vouchers It was too late to go back but im wondering if I called in tomorrow and explained would they refund me and then let me buy them back again using the voucher? The items haven't been used but there seems to be no sealing stickers on anything on them to show I haven't used them! I worked in retail for years and would have happily done this for a customer but understand some people maybe would refuse? What do you think?