This purchase was voided before any funds left your account.
This means that you might not see a separate entry on your statement showing funds returning.
Instead, the original charge will be deleted from your statement as soon as your bank completes the declined charge process. Most banks complete this process immediately.
Some banks do not support manual authorization hold requests. Please note that the final decision to release the funds prior to the authorization expiration date is always made by the issuing bank.
In cases such as this, the issuing bank waits for the authorization hold to expire before the cancellation is reflected on your statement.