Okay, I sure hope they will eat some humble pie & do something for you.
Looking forward to the outcome of this one.
On another note, just had my first "A" service done @ 15 k km.
Next service "B" should be at 30 k km, according to my display,
but my service booklet states "A" service @ 20 k km and thereafter all "A" and "B" services @ 20 k , or once a year intervals.
Aside from that, my dealer ( so I discovered afterward ), used crappy Quaker State oil.