ECS Fargate costs increase

Hello! Since July 26th, our daily expenses have suddenly increased fourfold, and we haven't made any changes. After analyzing the reason, we found that the expenses on ECS (Elastic Compute Service) have grown sixfold. Our final monthly bill was 2.5 times larger than any of the previous months. After 2 days, for unknown reasons, our expenses were recalculated, and the bill returned to the same amount as in the previous months.

Currently, we are observing that our ECS Fargate expenses are rising again, even though we have significantly reduced the load on ECS. Could you please let us know if this is some sort of error and if there will be a recalculation?