@Davis *****
You can tell them they have a choice:
1. Admit their mistake to you and help resolve the situation.
2. Admit it to the police and immigration when you report the incident and their involvement in the crime.
3. Continue to cover it up and let the internet decide when you post your experience to every social media group you can find.
They have already lost face. How much, how severely, and how much it will affect them personally and their business is up to them at this point.