My 2016 health insurance automatically renewed without my consent. What legal options are there?

Your health insurance renewal would be governed by the language in the original contract you signed. Most contracts are not automatically renewable. If you are part of a larger group such as one provided by an employer you will have little say in the coverages you receive and the renewal options. If you brought Private health insurance you certainly have leverage until you have paid them. My suggestion is to talk to your agent if you have one or get a lawyer to review the language in the agreement. You should have health insurance company directly provide you with the provision they are relying on to renew this without your consent.