They have a funny way of rewarding customer loyalty. I've spent £1000s over 6 years just to keep the car's so called (false economy) 'Lifetime Warranty' intact. Charged me to repair a crankshaft oil leak - other customers have had theirs done under 'Lifetime Warranty' - just check under Corsa forums. Then charged extra for 'diagnostics'. I can usually feel the car running better straight after a service, but this time round the car jumps the way a bus does when it's in neutral.
No valet done but got the added touch of dog crap on my car mat instead.
