I've had similar issues with my last two new Renaults at the same service centre. On replacement of rotors and pads at about 35000 Km my cars have sailed past another 65000 Km before needing any other brake attention. It's probably the reason that Renault service centre is no longer a dealer or service centre. They will all try you on, so use a set of measuring calipers on your rotors to ensure they are out of spec before agreeing to a change.
This seems to be the new reality as everyone seems to be on the same bandwagon of changing out rotors that have some wear rather than machining or dressing them up, fav, excuse seems to be out of spec. Mostly I ask for the replaced items to check wear myself as I am interested to see the condition of removed items. Not that this is foolproof if the dealer has plenty of badly worn out of spec items to fob off as those from your car. You could do as a mate/colleague did and mark all the service items as a check that the dealer is doing their job properly, remarkably his check showed up that filters and suchlike hadn't been changed, but he had been charged for same (Toyota Dealer in those days) not Renault.
My only experience of that sort of behaviour was in relation to the Renault Dealer charging for two batteries being changed in key card when they only had one keycard in their possession!
If that happens, for me, there is no second chance for that dealer and such a trivial item to destroy consumer confidence.
So if you have any suspicion as to how your dealer is performing, might be worth a check to confirm or put aside the nagging doubt..:wink2:
Ken.