We recommend to check your "Transaction" history in the Boost app to confirm that you did not accidentally add identical amount into your Boost Wallet twice.
We also recommend to check in with your bank. Sometimes a duplicate charge is actually a pending hold that will be automatically removed from your statement.
If you have confirmed that your account has duplicate charges and you suspect that one or more of these charges is an error, please let us know by submitting a request. We're happy to review and make necessary adjustments.