Update -
The technician arrived with the wrong part. DISASTROUS!
I coudnt end up explaning to the works manager what an INJECTOR PLUG ASSEMBLY is by the end of the day. I eventually sent him an email with pics of the part we need. I am attaching them here for ready reference.
The technician is here since then. I luckily had one of my drivers in Gurgaon for some work, who has now picked up the required CORRECT part and is on his way here. One thing i like is that the person who has come has a lot of patience. Unlike others he is calmly waiting here and explaining me whatever Im asking of him.
Lets hope they have now given my driver the correct part and the car gets alright soon.
Here is the lock that caused me so much pain in the "u all know where"

Here is the place where the lock is supposed to be but is not!

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