Under the guidelines of the SAFEA office once you've completed your contract the school is required to give you a release letter, letter of recommendation, and a copy of the cancellation of the Foreign Expert Certification. How you start is a polite demand letter to the person responsible for these things at the school. In fact they are to give immediately once you've asked. Next step make sure you have the correct Chinese name of all involved or the Principal, owner, etc. Then you go to the PSB office responsible for the FEC. Get the card of the person you speak to and a phone number. File a complaint in as much detail as possible. Locate the office of SAFEA and file a complaint there. While you're at the office of SAFEA call the principal and tell him or her you're there and ask for the correct spelling of their name. At this point alarm bells should be going off in their heads and you should get your docs the next day or two. Last but not least while at the PSB ask where the office of procurement is (district attorney). File a complaint again in detail. They're required to investigate ANY complaint coming across their desk. Make sure you take your passport and a copy of your contract if you have one.