Abusing the Trade feature to interrupt, etc

[Bixby]

I agree, but that doesn't mean it's fair. My point is: why even elevate this issue to such a degree, when you can manage it yourself? Is that not preferable? Should players be so quick to cry for GMs?

I'll reiterate that extended harassment may require GM intercession.

That's what most companies ask you to do to begin with. Try asking them to stop, then try blacklisting them (or whatever), then report if it continues after that. Because if nothing else, if you exhaust your other options beforehand, it's a lot easier for a GM to tell that it's harassment, and makes it harder for the other party to appeal their decisions.