Yes I have.. They are no where mentioned in the NT as practiced..So their service looked more like mine that your..
You assume that the New Testament was written in order to describe Christian life down to the last detail. I.e., good old sola scriptura.
Since sola scriptura is mentioned NOWHERE in the New Testament, sola scriptura is a man-made doctrine. It is unscriptural. It is self-contradictory, precisely because it doesn’t come from Scripture.