such is life he bought it as you stated it..
ran it then broke it... its his problem now!
does he want a refund? there are some horror stories of buyers opening cases it goes to dispute ebay side if buyer then he gets a refund and doesn't return the item..
might be worth taking a hit and giving him a part refund say £7-8 (ive got no clue how much they cost) so he can buy his belts and get off you back..
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