How do i get a refund for unauthorised auto renewal?

how do i get a refund for unauthorised auto renewal.  this happens every year even though i cancel auto renewal. the subscription is also increased this year by almost £60 gb .

[Edit: Calrified the subject]

Norton products (including subscriptions and Automatic Renewals) may be refunded within 60 days of the purchase date.

The instructions to obtain a refund varies depending on where you made the purchase. Please choose one of the following depending on your purchase:

https://support.norton.com/sp/en/us/home/current/solutions/kb20100512172507

Please review > Requesting a Norton Automatic Renewal refund
https://support.norton.com/sp/en/us/home/current/solutions/v58152553

Please review > NortonLifeLock Cancellation and Refund Policy
https://support.norton.com/sp/en/us/home/current/solutions/kb2010011316402


Please check your Norton account to confirm ... Automatic Renewal Off ... and no billing information. 
MY SUBSCRIPTIONS reports:  Activate Subscription Renewal ... with Automatic Renewal Off.  

BILLING INFORMATION reports:  There is no billing profile saved in your account ... with no billing information.

https://my.norton.com/extspa/account/subscriptions

Stop your Norton subscription from automatically renewing
https://support.norton.com/sp/en/us/home/current/solutions/kb20090818144126EN


Users may contact Norton Support regarding refund: