Roof Scam?

I signed an agreement for a contractor and subcontractor to repair my roof and finish interior repairs. The agreement states the work must be completed in 14 days. The agreement does not mention a construction work permit, however the county I reside in (I live in Texas) requires one be filed.

It's day 6 and no work has been done. The contractor and subcontractor have no insurance nor are they bonded. My wish now is to terminate the agreement but I'm not sure how. I will have lost a little money but do not want to fall deeper into what I think is a post hurricane scam. Can I demand a work permit be filed before they start, knowing it unlikely it can be filed before the 14th day, thus getting out of this agreement?