Hello @arwirnrao - I'm not sure I understand what you are talking about. Are you trying to say that your piggy bank disappeared? That you no longer have the piggy bank in your game?
If that is what you are talking about - you may be part of a test where the studio has removed the piggy bank from their games. If you are part of this test, the piggy bank should eventually reappear but it may be a few days or weeks while they run the test.
However, just in case you are not in a test group, can you please make sure you have the latest version of the game. You also want to clear
your cache. Once you have done both those things - you need to turn off
your device (mobile or PC) for at least 10-15 seconds and then start it up
again. If this doesn't bring your piggy bank back, then you are probably part of the test group.