On my first playthrough, I got the warp pod and exchanged it for a Portal Spawner with the Arilou. They also mentioned something about the Umgah's Talking Pet in the conversation.
After freeing the Umgah and picking up the Talking Pet, I went back to the Arilou to tell them what happened, but they just told me to go away in increasingly hostile terms. I never got any skiffs, which I was apparently supposed to. Hayes never said anything about it either. I also apparently missed most of the conversation options, because I've seen references to them saying a lot of stuff they never told me.
You probably accidentally chose the conversation option "I think I will kill you now..." or something to that effect while skipping by some of their dialogue. Over the years that has happened to me a lot.
They never attack you at all, and for some reason they don't even seem to notice when you kill them; they only notice when you THREATEN to kill them...