Body shop threatening to sell car

[nickjames]

Texas. An auto body shop repaired my car without first providing me with an estimate. The final price is outrageous and I would never have consented to it. Now they won't release the car until I pay it. They are threatening to sell it very soon. Can they do this?

 

[shortbus]

Yes. Sorry, but why did you agree to have the work done without an estimate?