Para empezar habría que presentar una denuncia ante la policía explicar al banco lo que ha pasado y si se niegan ir con un abogado , él ya sabrá lo que tiene que decir, pero los bancos tienen el deber de diligencia , normalmente llegan a un acuerdo antes de ir a juicio , porque saben que ante un juez es difícil que ganen y si pierden ya crean un precedente…
You could do all that yourself without a lawyer. And it wouldn't be your bank you'd be taking, it would be the merchant on the statement.
Banks are not legally obligated to raise chargebacks, its a voluntary scheme. But they do have a duty of care to act in fairness to all customers.
Given the amount of transactions to various merchants, it could be easy for a bank to prove claimant knew exactly what they were doing.
Lawyer might only tell you any of this after you have paid them.
