stupid biatch ex still contact me.?

nothing. if you ignore him, he may get the idea. leave him alone and he may do the same with you.

Biatch I hate you Biatch. Biatch I hate you Biatch. Biatch you stupid Biatch I hate you Biatch

do not respond or check with your phone provider on how you could block his number,

"Please stop calling me. I have nothing to say to you and no interest in anything you could say to me."

I hate you biatch

When he calls/texts you either do not even respond and he will eventually give up. You could also, when he contacts you, say "Who is this?" That will deflate his ego.