They're having a laugh aren't they? Why would you refund them when in the last nine months they could've dropped it on the floor, stood on it, poured a cup of tea on it... Why on earth would anyone think they could get their money back on a secondhand item after that long? Loons.
Wow !! 9 mths ? of course you will NOT,totally taking the mick I think,this is all to do with new policy's on returns via Pay-Pal so they are certainly trying it on,block them from contacting you after you have politely told them to get lost.