That's rubbish news...afraid I can't help with your query other than to comment that you should keep pushing them, you're right to say that it's basically a service being paid in advance rather than a warranty IMO.

__________________

Have Got ~ PlayMINI Exhaust, Dave.F Hybrid Air Filter, Custom BBR I/C Intake, Paul Martin & AndyH Detail, JCW AeroKit Front Bumper and Side Skirts, JCW GP Rear Bumper Trims, Aero Grill.
To Get ~ , 11% or 15% Reduction Pulley & Janspeed Manifold