There are many who may not have
responded to your questions, requests or invitations.
It is entirely possible that
they have difficult lives which prevent them from sparing
any energy to respond to your reaching out.
Or they may well simply dislike you.
Whatever their reasoning,
all of these behaviours are
out of your control.
When you have kept intact your virtue and
moral values in dealing with these individuals,
you have done all you can.
You are not responsible for their feelings or their lack of action.