Imagine going out to eat, you get a bill from the restaurant for the food and facility, another, LATER, from the chef, another from the server, another for the drinks, you learn how a restaurant works indirectly from all the separate bills. And no one informs you in advance of all the separate involved parties.
Sound nuts?
We need legislation to require billing for one event from one entity. All involved parties can bill through them. And , no bills coming in months apart for the same event.