Symantec
Double billing for norton antivirus

I have been billed by symantec for renewing my norton antivirus. I have also been billed by norton for my renewal. Both have been put on my credit card. Why is there bouble billing for the same renewal? Please refund my money!!! I never wanted two bills nor two renewals for the same service. Hope this is done immediately as money is scarce today. Sincerely I.Daborn