How do you deal with disrespect?

I mean sure we all have our ups and downs and maybe tell off even those we are close to at some point in our life but..."close" friends aren't supposed to diss you, hurl abusive words at you, make you feel like you're worth nothing, or insult you in various ways by making you think you're inferior to them right?

How do you deal with those? Do you forgive them and try again, or just move on?