These friends of yours didn't learn much in church did they? Their behavior is atrocious. As I see it you have 5 options:
1) Do nothing
2) Try to talk to one of the women so you can find out what's going on.
3) Talk to your preacher
4) Find a new group of friends and stay in the church
5) Find a new church

They all have pros and cons. I personally believe you deserve better friends. Good luck and best wishes.