He must have requested the waterpump needs to be changed as well, only people in the know request thats done because its not an item on the cambelt change service list.
Should be wear and tear items that go, having a full dealer history is good news, mine had it upto 91k, this was the last service done by VW in germany then i took it over myself, pointless paying for main dealer services since the cars worth buttons and its not going to add to the resale value.
I'd do the same yourself just make sure you use fully synth oil.