Premier delivery has worked every time and I always get my parcel the next day :) Recently bought a NUS/TOTUM card and the promo code wasn't working for student discount on the website so I contacted customer services via online chat and then it was referred to a specialist team to resolve via email. Literally less than half an hour later I was contacted to say that the code would now work. Best customer services I've had in ages! Made up, thanks ASOS and the team :)