You did not get taken advantage of. You took advantage of them, by stealing from them.

This is a Q&A forum. You have not asked a question.

You can't prove they lied. They gave you their opinion of what needed to be done. Your insurance company disagreed. Go to another mechanic.

That's on you. Return it for a refund.

Not everything has a remedy in the courts. This is one example.

your lawyer will know how to take advantage of this evidence.

Eventually, it is likely going to be up to a judge to decide.

You have asked this question before. Speak to a local litigator about all the facts.

This is a common scam. Stop all further contact.

So what? They can refuse to sell any alcohol, regardless of what the time cut off is. Your theory is simply incorrect.