hmm... Cayhay didn't start those routes. He/she has a HKG-HKG route (which is a bug that allows it and it has been fixed). Associating with that bug, the side effect is that Cayhay now has a route on all HKG routes with the frequency and prices mentioned above.
This actually is not Cayhay's fault. And frankly, I think I have been affected more than you have. Afterall, I have the majority in HKG

As for force-closing the HKG-HKG route, I would leave that to Air Elbonia to answer. As far as I know, AEB has already requested for Cayhay to close it.