How can I cancel my old visa work permit if my ex-employer won't provide my documents?

An expat is facing challenges in canceling their old visa work permit because their ex-employer is withholding necessary documents despite repeated requests, even after involving a lawyer. They have a new employer willing to apply for a new Non-B visa but can't proceed until the old work permit is canceled. Community members offer suggestions including going to the Ministry of Labor directly to cancel the work permit, the importance of filing a police report to have a formal record of the issue, and sharing information about the local labor office's contact details.