Don't they accommodate you knowing that you are deaf?
Granted, I don't know where you're situated, and from what I hear the hiring process in the US is sketchy, but this sounds like an easy problem to fix, if it's even a problem at all.
I’m not deaf but have other impairments and most companies literally don’t even know what to do, it’s like an alien just showed up on their doorstep. In my experience most of the time if you’re disabled you’re just quietly looked over.
It's just plain discrimination. If you have to equally skilled people, do you pick the one where you need to make special accomodations? Probably not, even if you are free of prejudices or other malicious thoughts.