Hi.
Does Norton issue a notice of billing (email), before uplifting s subscription ?
Alternatively, do Norton just hit a credit-card near the anniversary subscription date ?
Norton is supposed to send an email before auto renewing your subscription but I have read many threads here where folks say they did not receive any email. Maybe email address is wrong or email went to spam.
In any case your credit card will be charged 6 weeks in advance of your renewal date and maybe even before then.