The double charge you are seeing on your bank account is an authorization. This is a common bank practice for handling credit card transactions to ensure sufficient funds are available.
An authorization hold (also known as card authorization, preauthorization, or preauth) is the practice within the banking industry of authorizing and validating funds for electronic transactions done with a debit card or credit card. Bank Institutions ‘hold’ this balance as unavailable from the individuals account until either the merchant completes the transaction (also called settlement), or the hold "falls off." A ‘fall off’ is when banks render the balance available to the individuals account again. Debit card authorization holds can fall off the account anywhere from 1–5 days after the transaction date depending on the bank's policy. Credit card holds may last as long as 30 days, depending on the issuing bank.
If the Order that you believe you were charged twice for was based on a MathWorks Webstore Order that was made when logged into your MathWorks Account, you can also confirm that only one payment was captured by viewing the 'Orders' tab of your main 'My Account' page.
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