Your situation reminds me of when I first started teaching in Japanese schools. My students were totally passive and some tuned out English completely. The first day of class, students shouted out "I hate English" and "I hate foreigners", in Japanese of course. All I could do was try to introduce English as a means of communication, using all the creative methods and techniques I could think of. With patience and perseverance, students started to see me (and English) as "okay".
Those first students were never enthusiastic in class (though some are now English teachers themselves!) but future students were much more receptive because they heard about my reputation for interesting English classes based on communication rather than test results.
Please just keep on trying, using any and all approaches you can think of. In the future, your current students will become more eager learners (and they will thank you for it!) while your future students will certainly be better.