Disgusting service

I have been trying to Cancel my policy with Auto n General due to very bad service I got from them now they dont want to cancel and keep debating my account with out my consent as I send them email stating that I do not want the policy anymore and they should cancel they told me to call them, I did call them and i spoke to a rude consultant who dropped the phone on me, i them send a 4th email stating that I do not need them anymore because I deserve a better service and they should cancel my policy and stop debiting my account but they still continue and even have the nerve to send me a debi check mandate