Upgrade to 360 with Lifelock Ultimate

I currently have 360 Standard running on one computer and Norton Internet Security running on another.  I would like to upgrade to 360 with Lifelock Ultimate Plus on both computers.  How do I go about doing this?  Will I get a refund for the unused time left on the two current subscriptions?

Thanks

Please discuss your Norton subscription/s (upgrade/refund) with =>

Norton Official Support is via Chat or Phone.  No Email support. 
Support request generates case number/identity verification code.
Chat Support offers save & print transcript. 

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https://community.norton.com/en/comment/8549426#comment-8549426