It's a pity that you don't like some of the items. But please note that only items that are unopened and therefore have an undamaged hygiene seal can be returned. Surely you have read the information on the attached hygiene seal. This hygiene seal is necessary, because otherwise we can't trace a possible use of the goods.
This does not count for underwear, though. Please feel free to try these. However, lingerie and drugstore items must always remain in their original condition. Therefore, please make sure that for reasons of hygiene, lingerie which is worn directly on the skin, should only be tried on over your own clothes.