Workshop Marderbiss Problem

The following case: yesterday (Monday, 27.2. 9:00) we bring our vehicle to a contract workshop for guarantee work (control chain), appointment was fixed. Yesterday evening (against 17:00) comes a call from this workshop, the car would not drive any more. They would have changed the control chain, but the vehicle would not have met r. Reason: the ignition cables would have been destroyed by marten bites. They could fix this, of course, but that would cost about 200.- again. Nix guarantee. Now ask us the following questions: we drove the car there yesterday morning. Not pushed, not towed. They drove there (obviously) the vehicle into the workshop, because otherwise the call would probably have come rather, that it does not run anymore. They changed there the control chain – there you should start se What to do? Vehicle is an Altea BJ 2010, 1.2TSI.