Search Results: bad to text break up

Hello, I have a close friend of 8-9 years and she doesn't listen to me no matter how much I warn her. I am not a social person who likes to talk on the phone and text every day. Even the closest person I call (my family) doesn't take more than 1 hour to talk to. No matter how well I warn my friend or express my discomfort, she calls and texts me every day, no matter what I do. I think she is trying to see if I am just looking at my phone, even on Instagram. She is not a bad person, but this friendship harms me and I become unable to do my daily work. I stayed up late last night because of their selfish behavior, I was late to work because i couldnt wake up in morning. What are your thoughts on what you would do if you were in this situation?
Note: Every time I warn her, a fight breaks out, she says i am manipulating her, or she gets angry. Or she would make an excuse like "I haven't been doing this for years, I have a problem now", but even when she said she wasn't doing it, it was just a little bit less than that, it was still the same, and I was uncomfortable.