XC70: Engine Cam Belt, Aux. Belts, Service intervals. I'm confused.

[Ian21401]

Not wishing to hijack Bulliedboy's thread "Snapped Drive Belt", but following on from it and the comments therein.
Daughter's XC70, 2011my, D5 AWD, 101,000 miles. Acquired used Feb.2017 @ 88,000 miles from main dealer. Dealer services since new.
I try to be very careful regarding cam belts and whenever I have bought a used car myself, if there is any doubt as to whether the cam belt etc.have been replaced I replace them anyway.
When she bought the XC70 we checked whether the cam belts and/or aux. belts had been changed, and if so, when. Dealer advised that they were not due until 10 years or 108,000 miles, whichever was earlier.
Haynes states 5 years or 90,000 miles.
Dealer has just done a "Standard Service" at 100,241 miles. The print out of the service sheet has every box ticked, including box 25 (Belt Tensioner and idler roller replacement for auxiliary unit belt) and box 26 (Camshaft belt and auxiliary belt replace.) I've looked in the engine bay and the sections of belt which are visible do appear newer than before. I asked the dealer when, if ever, the cam belt had been renewed and was advised that it had been done in 2014 at 47,000 miles. I expressed surprise that it had been done so early at such a mileage. The dealer was unable to explain this.
Daughter was given print outs of the previous service sheets when she bought the car but the 2014 one is missing. The 2015 one (at 72,000 miles ) shows in box 12 under additional customer order [Outer accessory drive belt (with hydraulic belt tensioner): replace (from engine No.: 884798-1046801)] with a hand written note in the OK column "Re-worked as per QSS29461" Our car's engine number is 934678 so it falls within those numbers.
I have already asked the dealer to confirm, or otherwise, that the cam belt etc have been replaced as per the latest service sheet but I received a very non committal unsatisfactory reply. Having read the snapped drive belt thread I will be repeating my questions to the dealer.
Also, green van man comments that there is a second auxiliary drive belt driving the AC compressor. Haynes does not mention any second belt. I've looked at our engine. The serpentine belt ( the one with longitudinal grooves) appears to drive the steering pump, alternator and AC compressor. The AC compressor has a second pulley which has a lightweight V belt on it but I am unable to see where that belt goes to.