Hi Kirakira, 

I'm sorry to hear that you're having such a frustrating experience. Here are a few simple corrections to your journal entry. 

3rd July
I am very upset! I still can not leave! I want to burst into tears! (CRY is a verb. I cried, I am crying, I want to cry.)
Why can the new guy leave so easily?? He replaced me! ("ed" makes it past tense)
I have been asking to quit for about 3 months! Why ?why?why!!!???

If you have any more questions, feel free to contact me!

Ariela 

3rd July

I am very upset! I still can not leave! I want to burst into cry tears!
Why How can new guy can leave so easily?? He was the guy to replace me!
I had already been asking for to quit for about 3 months! Why ?why?why!!!???

or "I already asked to quit three months ago."

It's really bad when employers push you around like that. I hope you'll be able to quit soon.