service light

[Napzito]

There is something wrong with my car. two month ago I took it to bosch service centre for plugs replacement. The service indicator( oil change) indicated that I will have to change oil in the next 8000km. When I collected the car it indicated 3000km. By sunday it showed that I have exceeded with 1500km. Today when I switched the car on it shows that I had service overrun of 9000km. Is this possible OR IS THERE SOMETHING WRONG WITH MY CAR. Please help