Missouri state says I owe income tax but never worked there but full time resident. What’s going to happen?

I received a notice from state of Missouri that they never received my 2024 state individual income tax and I owed 2k with penalties and interest. I worked on the Kansas side the full year but live in Missouri. I checked turbo tax and my Missouri state tax was never filed for whatever reason. I sent my tax filings showing I owe zero but sent stupidly to to the physical address and not the PO BOX but within the deadline. Then I get another letter 2 weeks later but this time a bill with an amount owed and they never got my tax files. No matter how many times I call them they have no lines open and refer me to their AI Chat bot on the website, can’t get a hold of anybody. Am I really going to be responsible for this bill even though I never received income tax? Everything has been filed correctly for 2024 Kansas and Federal. What do I do?