service exceeded

Hi everyone! bit of a conundrum here! got a e280 sport cdi. after joining this forum when i got the car i went to an indy to get service C done. However the dopey bugger must have messed up when resetting the service indicator. instead of asking for service D it is now asking for...

I have a question about the effects of exceeding the Service interval. I had a Service B booked for my A180 CDI a couple of days ago, but had to cancel it due to last minute site work commitments. I've been stuck on site for longer than planned and the service interval is now exceeded by 400...