The first and most important step: stop working, do not answer any questions, do not deliver anything. Demand your payment. How much is the amount we are talki

The first and most important step: stop working, do not answer any questions, do not deliver anything. Demand your payment. How much is the amount we are talking about here? I have seen some people in similar situations and things never ended well. Some invested five-figure $$$ in lawyers and legal fees and never got a penny back.