How do I open an Unpaid Item case?

Absolutely had non-payers up to here (indicates significant height with hand) as I'm just absolutely beset by them at present.

Just dealing with my seventh or eighth on the trot and wanting to open a good, old fashined Unpaid Item case and I just don't seem to have any avenue to do so.

I click on "Report a buyer", then "open an unpaid item case"  and the only options coming up are: 

 - Out of stock or damaged
 - Buyer asked to cancel
 - Issue with buyer's delivery address
NOWHERE is an option to actually indicate that the Buyer is actually a non payer.
 
Hoping the brains trust can tell me if "non payer" is even a thing on eBay anymore?