I'm going to ignore my mother's 25+ phone calls and 28 text messages over a span of 30 minutes
Why would you ignore you mother when she obviously needs you.
My mom treats me like a child. Being ignored for an hour or two should teach her a lesson or two
Not responding to your mother's communications just because you don't like the way she treats you is immature and wrong. Your mom needs you, so be there for her.
If she is calling me so much she must want something.
Exactly, so the last thing you should do is ignore her. You should find out what she wants and once this is settled, you can set boundaries for future situations so this does not happen again.