If you notice that a charge is pending more than once for a single filing it is because the payment system for those fees has pre-authorized the payment more than once.
When you submit your filing, the court pre-authorizes your card for the filing fees. If the filing is rejected, then the court will not settle that pre-authorization, and it will eventually fall off your card. The time it takes to fall off can range from 1 to a few days depending on your banking institution.
Additionally, when rejected filings do occur, and you “re-submit” your corrected filing, the court does another pre-authorization. If accepted, this transaction will be settled.
In the mean time, you may see multiple pending charges on your credit card account, but the pre-authorizations for the rejected documents will drop off the bank statement.