Yasher Koach for your letter. The breach of tznius we are seeing today is horrendous. How sad and painful it is to see these kinds of violations taking place in the very place where we communicate with Hashem. If the Rov or Rabbi of such a shule does not make it his first priority to rectify the situation he is not much of a Rabbi.
indicates to me that this Rabbi leaves much to be desired and perhaps you should change your shule and go to a shule where the rabbi is true yorai shomayim.