Coseco Insurance Auto Insurance Reviews

Tried to get an auto insurance quote as I am thinking to change my insurance provider. First, I realized that Coseco sent me to a Cooperators website. I assume they are owned by Cooperators? Second, my quote came up double of what other company quoted me: over $350 / month despite the fact that I have a clean driving record and have 10+ years of driving experience. Ridiculous...

Tried to get a car insurance quote but the button BEGIN was not working... If they can not provide a simple quote, not sure how well they'd insure me and if I can rely on this company...