Their statement is available to be viewed for anyone who contacts them. I don't know whether Turner regularly lists the companies it's not doing financials for. If you prefer to assume that they're doing the financials for every firm in the world even crooked Sulja and you're unable to call Turner to verify then that would be totally up to you wouldn't it?
But again there's no authoritative source that indicates Turner is doing Sulja's financials. Even crooked Sulja hasn't said Turner is doing their audit.