Don't take accountability when they get it wrong. Delivered a parcel to the wrong address and even though I had the delivery 'confirmation' photo as proof it was the wrong address, still don't recompense customers - you have to go through the seller as they "don't deal directly with customer complaints". They are a business, which means they have a finance department, which means they should be able to recompense customers when they so blatantly screw it up instead of turning it into a 10 step process and leaving you out of pocket.