My old PayPal account has been in a negative balance by several hundred pounds since 2010 when I sold a phone on ebay and got scammed. Other than afew letters through the post saying this and that will happen if I don't pay it, nothing came of it so as long as your balance is 0 in PayPal it will just go to a minus figure and you won't be able to use PayPal until that negative figure is back to 0.
If it gets to the stage where it is returned don't forget he has to provide proof that it has been delivered back to you so if it's not sent signed for then play dumb saying you haven't received it and if you're not in to receive it then leave it at the sorting office. Even better if it's left with a neighbour as you haven't received it so PayPal won't refund him until proof is shown you have it.
If it gets to the stage where it is returned don't forget he has to provide proof that it has been delivered back to you so if it's not sent signed for then play dumb saying you haven't received it and if you're not in to receive it then leave it at the sorting office. Even better if it's left with a neighbour as you haven't received it so PayPal won't refund him until proof is shown you have it.