Not happy with Shop-steward and I m thinking of cancelling my membership coz I m not safe

I have been a member 4 Ten years but I have complain abt being bul**** by Shop-steward I dnt get how imatu train them bcoz I cnt be paying 4 them to protect me but she is bullying me .have chat abt me with non imatu member abt my personal details and are lairs but when they ask her she said the things she say when i m not in the room she said she can tel me face to face …..help me understand so I pay Imatu coz they can get Shop-steward that bullies members