Got a denial letter for unemployment, what now? after 9 years as a customer-service rep

I got a denial letter last week saying I left my job voluntarily, but I was let go as a customer-service rep. My employer's version of events does not match mine, and I have emails that show it. Should I ask someone for free legal help?

I printed my emails in order and wrote a one-page timeline. The hearing officer kept going back to it.