Nope, unfortunately there isn't. It is not an obvious problem to address, as there is no unique authority over top-level domains (apart from their initial assig

Nope, unfortunately there isn't. It is not an obvious problem to address, as there is no unique authority over top-level domains (apart from their initial assignment from IANA). Some registrars have implemented this kind of "abuse reporting" procedure, but obviously they have authority only on domains issued by them.