Norton Renewal

My Norton Anti-Virus was due to expire on 30 Sept 2015 so I decided to renew it early.  To my surprise my new expiration date is 365 days from the date I renewed it not 365 days from the 30 Sept date.  This is nothing but a rip off.  You get penalized for renewing early.  From now on I will wait until the last day to renew my subscription.