Do they not replace the lockset if that is the case?
![undecided :undecided:](https://www.golfgtiforum.co.uk/Smileys/modern/undecided.gif.pagespeed.ce.pzpJrE4p4e.gif)
I know when we bought an ex vwuk car once it only came with one key and we had to fight for another with the dealer in a similar manner to the original poster.
Many reason's I guess. Lost at auction, lost by dealer, lost by a previous owner, lost by blundering salesman...