Replacement Knock Bar

Start with positives - delivery was very quick, one day after purchase and it arrived.That's the only positive.Its not a replacement knock bar at all, its plastic tubing they've cut. No where in the description does it say its just basic plastic tube cut down. For that price I feel genuinely ripped off, I could have made my own but as it's advertised as a replacement bar I expected an actual bar, not hollow plastic tube that looks like it will split after a few knocks.