I've had the very rare missing piece before, but have never received a piece that (according to the parts list) isn't even in the set! Bag 2 in the new Space Shuttle
What to do if a LEGO Set is Missing Pieces? – Brick Bucks
Replacement Parts Missing Pieces Manuals Labels bag for Lego BMW M 1000 RR 42130 | eBay
I submitted a missing parts request to Lego, they accepted, there are a few things wrong with this whole thing. : r/legostarwars
How to Get FREE LEGO Replacement Parts in Canada
The new LEGO Pick A Brick is now live, replacing Bricks and Pieces! - Jay's Brick Blog
LEGO Elves 41172 Blue Water Dragon REPLACEMENT PARTS PIECES - INCOMPLETE | eBay