I married an already married man what action can her first wife do

I married a married person.dis matter don't know my parents.my marriage in a church ..my parents and relatives.dis matter don't know his first wife.she is illiterate.after did matter know my parents and his wife.my parents fear ..she take d case...firstly my parents case fr my husband and gave up my relation.temporary note d paper in p.s .but he is not like relationship her first wife.but she is harassment my parents and me phone cals?he is live hyd..he and me r employees..finally my husband and me r continued my life go out any place..wat actions she is prefer?pls tell me sir??