Why Norton demands call my mobile, My Account origionally on PC still is FOR TIME being, Why they change my contact Phone #

Why Norton demands call my mobile, My Account origionally on PC still is FOR TIME being, Why they change my contact Phone # from House phone it don't move, as stated thats why I have Norton PC ypu know. Why does Norton snoop onj on my [Removed] thats NONE Their business instead of fixing or handling issue because Norton doesn't function as it's told. [Removed]

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Where are you being asked for your mobile phone number? Norton cannot add your mobile number unless you gave it to them. 

Are you talking about setting up 2 factor authentication for your Norton Account?