Why do I have to explain myself to someone for them to just piss off

[Jessde]

Racist honophobic annoying negative associate won't take the hint when I constantly ignore their calls or messages
Why do I need to tell you to fuck off for you to get the picture?
I've only known her a year!

If I block her 100% she will ring me on private number like a weirdo and ask why

Guessing there's a backstory OP... Why does she keep messaging? And what happens when you ignore her?

If she's as bad as your post says, is ignoring subtlety and will go a bit stalkery if you block her, just answer and tell her to fuck off.

I use to work with her but don't anymore. She did certain things and made certain comments that I don't like but I honestly never said anything because I didn't want an akward atmosphere.
I don't work with her anymore but she just makes my skin cruel. I cannot stand speaking to her, she invites me places then doesn't contact me then texts me weeks later saying "hi how are you"
She just annoys me so much I just want her to go away.
When I ignore her she will wait a few days like she has done then call me 3-4 times in a row

I'm not really a confrontational person so I don't really know what to say. If I said do not contact me again she will say why and tbh I don't care for her to explain anything to her.

You know what I'm just going to block her. Sorry everyone for rant, have a good night

Yes just do that...