I am an investment consultant of a securities company and submitted my resignation in writing to the company one month in advance. It will be a month soon, and the company has not gone through the formalities of leaving the company.
Article 37 of the Labor Contract Law clearly stipulates that the employee may terminate the labor contract by notifying the employer in writing 30 days in advance. The employee may terminate the labor contract by notifying the employer three days in advance during the probation period. As long as you can prove that you have informed the company in writing one month in advance that you want to leave the company (for example, human resources sign for it or you recorded an image with your mobile phone to prove that you gave it to the company), even if the company forces you to stay, you can also give the evidence that you informed the company one month in advance to the labor bureau to complain about the company's illegal operation, and the local labor bureau will correct the company's illegal behavior.
Generally speaking, the company will not force an employee who is determined to resign. According to what you said, you should have found a better job while you were working, and then asked to resign yourself. The company is dissatisfied with your practice, which smacks of deliberately making things difficult for you. However, only if you apply for resignation one month in advance, it is reasonable and legal and will not affect your credit record.