Piggy Bank is an opportunity to reasonably purchase coins.
While the Piggy Bank is in progress, you will receive bonus coins for each level you clear. These coins are kept in a piggy bank, and if you collect more than a certain amount of coins, you can break the piggy by making an in-app purchase and collect the bonus coins.
Don't forget Piggy Bank has time limited, and maybe you lost bonus coins forever.
You can't disable a Piggy Bank, but you can leave it unused. You don't have to use it !
We hope you keep enjoying our games !