Hate ist name calling?

Is it me or does anyone else hate it when people deliberately select IST names to call a person? I'm a woman and I've been called a ***** so many times it may as well be my middle name. I've also been called a slut slag tart etc. I'm not any of those. Usually it's bitchy girls or childish boys. Or men I've rejected. It really pisses me off. Why the ism?