If he won't pay the correct carriage costs then obviously he will not go through with the transaction. Make sure you open a dispute with Ebay for this transaction, that way you will get your commission and listing fees reimbursed. You will have no problem getting it back if the listing clearly stated collection only.

Sadly if he leaves negative feed back it is almost impossible to get it removed, just leave same for him and also you can leave a reply to his negative comment, so anyone reading the negative comment can see your reply to it.