The Live Casino is presented by real people and making mistakes is human. Understandable, but of course annoying for you as a player.
If it's a critical mistake that affects the course of the game, the game is cancelled and all players receive their wagers back. You will be informed directly by Evolution via chat. Any potential winnings (which are certain) will be credited to your account by Jack's within 48 hours.
If it's a non-critical mistake, the game will not be affected and can continue as normal. The outcome that is subsequently placed on the table is therefore decisive.
Of course, you can always contact Jack's Customer Support to check the status of your potential payout.