Nissan Motors — Delay and faulty product?

Good evening,
I am Dr. P. Chandrasekaran; owner of Nissan terrano vehicle no. TN33 BH 4632; I am at Erode. My vehicle suddenly did not start and had to call the service next day, found to be Diesel pump problem.
usually the diesel pump has to last for around 3.5 lakhs kilometer are so in all vehicle by which time we might have looked into in servicing. Luckly I wass at my hospital and returning home.
I am doing my services all at Nissan services at erode from starting of purchase of my vehicle.
they say it is a rare problem and we have ordered the part and it has yet to come. it is already more than 10 days my vehicle was taken to the service centre.
they said pay Rs. 20000.00 so we will get your vehicle fixed quickly in 2 days; this was 5 days back.
Even though it is a very rare complaint/fault in the diesel pump, you which will not occur as early as this, you will charge; but you will give the vehicle only after a months time.
this is what is happening for me in rectifying the any defective parts of the vehicle. routine services they give it on time. only GOD knows the servicing quality.

I am a proffessional who is dependent on the vehicle for my work. I am taking the call taxies which could not be avioded.

please, I request you to send the parts early so that I could have the vehicle soon. I still could not place what is the reason for failure of the most important part at this time and whether this is happening in almost all vehicle - TERRANO model due to faulty part.

thanking you expecting early delivery of my vehicle.
Regards
Dr. P. Chandrtasekaran M.S.General Surgery
[protected]