Timing belts exchange at 27,000KM???

Can you help me out? My wife has a Punto Grande BJ 2006 and drives very little. Now the car is 5years old and has only 27,000km at the speedometer. The workshop wants to change her timing belt and water pump because 5 years are planned. To me this seems to be covered with the few kilometers. Moreover, the workshop claimed that the water pump licks, although we have never lost water and since her diagnosis of 2 months ago none loses. I ch ask you for a numerous echo Karl-Heinz