My request for a F-1 Visa was refused, and I am using extension for?
I would suggest you immediately leave the country. Ask your embessy to issue you a passport or a onetime use papers to leave the country. Visa has no use in usa, because visa allows you to enter while the CBP officer grants you stay, ( you applied for extension of stay, so you can stay till a decision is made without a visa stamp in your passport). You can print I94 from DHS website but you need to inform your country embessy of your lost passport ASAP and also file complaint at the police station. If someone misuse it, you will be in great problems. I would suggest you to leave the country, because already you tried for F1 status change and it is rejected and your B1 extension most likely will be rejected. The more your try to stay in USA, tye more you are making your case harder for a new B1 visa.