I was trying to take the additional tax-option by using sales tax paid over the standard allowed amount. We purchased a new car. We remodeled our kitchen. Help me?

I am in a struggle with their software. I enter my numbers and they keep saying it's wrong but won't let me change the numbers. I have a headache and a fever. I need to go to sleep right now. Sorry. What do I need to do to speak with someone tomorrow? I am out of ideas, what am I doing wrong?