In conflict of this sort, it is always the fault of both. If I were part of Jolla, I would have had much difficulties to deal with this. Their reaction was maybe not the greatest and maybe a bit late but they did consider your request. But as they decided to help, you refused the discussion and thought that one message would be enough to feed the discussion (see logs of one of last community meeting).
THP ignores you. That is maybe harsh, maybe well-deserved? But why do you think Jolla can decide who is right. Plus even for professionalism, should they force THP to talk to someone?