Iv had enough of my now ex friend taking advantage of me.

The last straw was a few wks ago, when she completely showed me how much she disrespected me after I canceled all my plans to do her a favour. She no longer needed me but didn't even respect me enough to let me know. Didn't say sorry for wasting my time or even a simple thank you for agreeing to do the huge favour for her in the first place.

So iv had enough.
But she doesn't seem to care enough to acknowledge my anger toward her.

Iv been ignoring her for 3wks.
Iv blocked her calls but she keeps txting asking if I'm still alive,lol as she's heard zero back from me.
In the txt she said she will contact my family to find out if I am in fact dead, which I'd rather she had no contact at all.

Should I tell her straight I don't want to know her or continue ignoring her and keep her guessing if I'm alive or not?
...
Even if she did think I was dead, I'm sure the only worry that will come to her mind is that I'm no longer there to do her favours.

Listen,
What you have to think about is "is her friendship important to you"? If it is then i suggest trying to talk out your problems if it isnt important and your sick of her treating you like crap then say it to her say im sorry but i dont want you as my friend because you dont treat me how i treat you which is with respect! Be honest and hopefully everything will be well good luck xox