[chunky]

Who delivered it? Was it your usual mail carrier or some amazon employee? The amazon guys tend to take a picture of the package standing infront of your door so they can prove it has been delivered (doesn't prove anything imo but that's not the point here). If it was just your mail carrier go ahead and say you didn't receive anything, nobody except him can prove it so it will be one person's word against another's and they will probably just refund you without further investigation.