Did you try giving him a fresh diaper and a warm bottle?
I still don't see what can be done by them. Original deal was refunded. Sale completed as local pick by ca$h.
So if it gets to the point that ebay does intervene, point out that the payment was refunded and that was the end. Deny that the second half ever happened.
If at first you don't succeed, play dumb or play dead...
| 
