Try our re-instated info resource - "Aladdin's Cave" (Main menu)- sorry it's taken so long to fix
Strictly speaking DK have done nothing wrong. You have the same consumer rights buying used and new. You could have exchanged the crank or sent it back for a refund. DK offered to replace the crank rods and that was declined. They are under no obligation to do a partial refund. Could they have handled it better? Probably. Do they have to? No.