How to to avoid being used and abused at the workplace?

By focusing on work and concentrate on one at a time . This is make management realize your specialties.

Prior recruitment: Have a clear understanding and inquire about abuse reporting methods, personnel and channels.

Due work: Be accurate with the work tasks, respect work place morals and practices and make it clear to other colleagues that you have a red line for your own space and conducts.

Abuse happens: not reporting an abuse or miss-use will make you more accountable and responsible where you encourage abuse acts by not reporting, work safety is your responsibility in the first place and no one else will protect you as you will do for your self.