What you will do as individual won't matter. Every company is big enough to survive without an employee and being the exception you won't change anything in the

What you will do as individual won't matter. Every company is big enough to survive without an employee and being the exception you won't change anything in their future behaviour. The ideal case would be if job offers are binding and the company suffers legal consequences in case of revocation, a.k.a a monthly salary for the position. Next best action is if you organize people for a collective action so that management knows that bad behaviour has consequences. However, such work is ungrateful, likely not to succeed, and even more likely to backfire if communication turns into confrontation. Starting a fight should happen only if you have clearly stated goals, a formulated plan of action, and an exit strategy in case that things don't go according to plan. So, if you do it, as minimum count what leverage you have, what goal you want to achieve, and if the leverage matches the goals.