There are a couple of different reasons you may see more than one charge for Netflix on your bill:
If you recently added a payment method and see more than one charge on the same day, one of the charges is likely an authorization hold.
Authorization holds are used to check that a payment method is good.
Netflix never collects the authorization amount.
It'll be removed automatically, usually in 8 days or less. Check with your bank to confirm when the funds will be released back to your available balance.
If you recently changed to a higher-priced plan, the plan change takes effect immediately so you can enjoy all of the added features. Since Netflix is a prepaid service, your billing date will change based on the remaining balance of your last payment. This results in an earlier billing date that may show in the same month as your previous bill.
If none of the reasons above apply and you see more than one Netflix charge, please contact us.
Not quite what you're looking for? See also Unrecognized or unauthorized charges from Netflix or Charged after canceling Netflix.