Many years ago, I had some mixed-breed bunnies that I needed to be rid of. I placed a "bunnies for sale" ad. After I had re-homed (cheaply) all of the ones I intended to, I got a phone call from this guy. I told him that all of the rabbits described in the ad had been sold; the only ones I had left wouldn't be good pets because they were sneezing (a chronic, contagious condition called snuffles) and really ought to be killed and eaten. Oh, they didn't care about the sneezing, they just liked bunnies, etc. When they came to get them, I once again voiced my opinion that these rabbits should probably be culled. I mentioned that several were bucks and would need to be separated. Each time, he assured me that they would build more cages or do whatever was needed to make the rabbits happy. I feel like I gave him every chance to admit the truth, but he started in this story, and by gum he was sticking to it! When they drove out of the yard, I told my husband, "they are going to eat those rabbits."
(You might wonder why I let him have those rabbits [free, BTW], if I was so sure he was lying to me. The way I saw it, I wanted to be rid of them, and he would actually be doing me a favor by doing something I hadn't the nerve to do myself - killing them.)
A week or so later, the same man bumped into my husband in one of the local stores. "Those rabbits were so good," he said. "If she ever has any more she can't get rid of, give me a call." When hubby told me about this conversation later, I said, "over my dead body! I don't care that they ate them; I told him that's all they were really good for. But he lied to me. Lie, after lie, after lie. I'm not a child that needs to be shielded from the truth! If he ever shows up here again, I'll run him out of here with a baseball bat!"
So yes, I understand that you are angry that you were deceived, but would you be any happier if those roosters had been killed and eaten, and you just didn't know?