I do a small amount of online shopping (ahem). AIBU to always insist that if I return the entirety of an order that the merchant refunds me the original postage and packaging?
Quite often they don't do it, or refuse, and I always mention the Consumer Contract Regulations 2013, which says they have to refund the basic P&P of getting the item to me.
Although I'm happy to pay to return it from my house back to them.
AIBU? Some places put up a right fuss!