This is like selling one of those old Kryptonite locks that could be defeated with a Bic pen. At that point, the lock is truly defective, and should be pulled from the market. Your lock should require something more than a readily-available, vaguely key-shaped object to operate—so if you can operate the lock with a Bic pen (like the old Kryptonite locks) or a USB charging cable (like the new Kias), the lock is defective.