Iowa wrongfully taxing me?

Forgive me if I posted this in the wrong spot, but I need some advice on a situation I just found out about.

 

I lived in Iowa from 2009 to 2014, and then moved back to Texas.

 

I just found out that Iowa is trying to charge me income tax for the last 5 years that I live and work in Texas, and they sent me a notice of intent to Levy.

 

Anyone have some ideas on how I can fight this?

 

Just to be clear I did not live or work in Iowa nor am I an Iowa resident for The last 5 years.