I had a valid two-year visa of France. I bought an ID card of Poland from a guy by paying extra money. I never used that card for any legal issues.
When I was boarding the flight from my country, by mistake I showed the ID CARD TO AIRLINES AND THEY SEND THE COPY TO THE OFFICER JFO SITTING AT THE AIRPORT. The JFO who takes the responsibility of Schengen came to me and saw my ID card of Poland.He cancelled my France visa and gave the card to the Poland embassy.
After 3 months I applied for a visa again with my new passport with the Swiss embassy. They refused my application 2 times already.