I'm going to ignore my girlfriend's calls.
Why are you ignoring your girlfriend's calls?
Because she has been being a bit too nosy about my personal stuff.
Ignoring your girlfriend isn't recommended, since communication is the key to successful relationship. You should let her know that she is smothering you and you need your space, so she can adjust.
I don't care about her feelings. She has a bad habit of pushing herself.
You just need to learn to talk better and let people know what's on your mind. Maybe she doesn't know she is being too pushy.