Taking money that does belong to you Auto & General

I cancelled my policy with auto and general yet they refused to refund me my money. The lady was so pleased to tell me to take it up with my bank instead of processing my refund. I'm so dissapointed that they would take my March premium even though I am no longer their customer. Why charge me for March yet I'm no longer your client. All I want is my money back because I'm no longer your client. Don't charge me for March, give me my money back because that's abusive behavior. She did not even offer to transfer me to their refunds department.