A "force post" transaction occurs when a merchant charges a card without a prior authorization. Unfortunately, this isn't something that Privacy can block.
But I set a limit on/closed the card? How did they charge me?
Broadly speaking, merchants only resort to force posts when they are faced with the potential for serious loss as a result of fraud. For instance, if you rent a car and don't return it, having a limit on a card or closing the card does not absolve you of the responsibility to return or pay for the car, and the merchant can force post the transaction.
If you believe one of your transactions was a result of a force post, please contact us at support@privacy.com and we'll work with you to try to resolve it.