All you need to do is go onto your account and click Returns. Choose 'substitution not suitable' and they will refund you the full amount for the apples, which you don't have to return. I always use eating apples for pies and sauce as I like my apples chunky and I find Bramleys go to mushy really quickly. Just use less sugar. Having once been sent a 4 litre bottle of clothes softener instead of a 1 litre bottle of washing machine anti bac cleanser, I'm very careful of which items to click 'no substitute.'