Rediculous Service Charges

Have mentioned in previous posts about buying my GU 3LTD second hand with just 15K kl on the clock. Others have posted here about not voiding warranty by doing own service or servicing by other than distributor network. Seems fair enough, so I trot the wagon down to the local dealer service centre for the 15K oil change. B....hell, $265.95 later and a few words from me I was a bit peed-off. Most expensive oil I've ever bought. And the broken inner rear mud guard shield was only patched up with cable tie, I thought they'd replace it under warranty, after all it broke. They did replace a headlight globe.
A few enquiries later elsewhere & I now know that any reg service mechanic can do the work & stamp the book. Make sure parts used are genuine though but warranty work will have to be done by dealer agents. I checked this with the MTA.
All these extras charging for cloths, throwing out old oil etc is add on excess. They told me they gave it a valet service (wash) - I washed it before I took it down. gee I'm cheesed off.