If the cardholder overdraws beyond the prescribed limit or time limit for the purpose of illegal possession, and fails to return it for more than 3 months after being twice collected by the issuing bank, it shall be deemed as "malicious overdraft" as stipulated in Article 196 of the Criminal Law.

Whoever commits this crime shall be sentenced to fixed-term imprisonment of not more than five years or criminal detention and fined not less than 20,000 yuan but not more than 200,000 yuan; (Overdraft 10000)

If the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than five years but not more than ten years, and shall also be fined not less than 50,000 yuan but not more than 500,000 yuan; (Overdraft 50,000)

If the amount is especially huge or there are other especially serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than 10 years or life imprisonment, and shall also be fined not less than 50,000 yuan but not more than 500,000 yuan or confiscated property.

So negotiate repayment with the bank immediately.