Buyer opened return case claiming item was defective, it wasn't

[swampage]

What options do you realistically have here? Report the buyer and lose all the money from the shipping?

The item wasn't cheap to ship. I already issued the refund because I know the policies on that.

Is this all there is to it?

[donsdetour]

you have refunded:

Its done. Nothing else you can do.

Oh and blocked bidders list for the user.