How to deal with a mom that doesn't listen to you?

I'd try to explain to her that you feel very upset by being ignored and that if she just talked to you about it (even if she said no, which you'd have to accept) you'd feel alot better. Write her a letter or something if you have to and leave it on the kitchen table so she can read it, she just may not like the confrontation so if you leave it she can read it and you guys can discuss later.