X issued a personal check for P 50,000 payable to B on September 20, 2020. When B presented the check to the bank for payment, he was informed by the bank teller that there is only P 20,000 left in X's account. Thus, the bank teller returned the check to him and he was advised to just file a case against X.X learned of the advice given to B since he was just sitting on a couch inside the bank and heard everything.

1. Other than the case that could be filed by B against X, what other law/s were violated?
2. Would your answer be the same if X's account is a dollar account?