Big Problem With Fraud activity from Tapjoy and Fyber

Hello, there is big problem Which Nordeus Staff needs to resolve with tapjoy and Fyber, they randomly reject random offers with purpouse and that causes that i lost a lot of money for purchase tasks.for example one game 4 purchases minutę by minutę, they accept first, second is rejected even without specific cause. Used same method. And that happened to a lot of people, perfectly done task with all needed evidence, rejected. They are thieves and thats fraud, why they are unpumishable, someone tried to sue them, if not we will