there is a possible chance to calm them down by using alternative fingering 3!!!
The "a" with fingering 1+2 is often to high pitched and this might scare them
so they attack. By using alternative fingering 3, you can lower the pitch to their
level, and they might be more friendly to you.
Then you could live together in clean harmonics!!
This is the only advice I can give you at this very moment.