You could try to rescind the purchase due to civil fraud. Likely too small for an attorney to accept so small claims court may be the way to go.

Sounds like a workers compensation exposure case. That being said, the statute of limitations may have expired.

Notify your own home owners insurance co. They may defend you.

Wrong legal category. You should consult with an Employmemt attorney.

No go after the driver/owner of the car. Walmart was not negligent unless the employee was doing something in furtherance of their job. Then again...

Don't do the work and hire a workers compensation lawyer.

No injury, No Case. Consider yourself lucky.

Don't talk to the police. Talk to a criminal defense lawyer.

You could be charged with shoplifting. If so, hire a defense attorney and don't talk to the police.

Sorry to hear that. Please note that unless you received medical attention there really is no case. As such, your best bet is to ask for a refund...