What should we do if the promise given to us by the company leader changes?

Unite all colleagues who may unite, first write a joint letter to the leaders to reply within a time limit. If they can't reply at the expiration date, they will all sit in the store or the general manager's office and even shout slogans and post posters, resulting in a situation where they can't operate or work normally without solving the problem. The more people there are, the greater the momentum and the better the effect.