Coal India- Lodging an FIR or legal notice for non-refund

I had applied for 200 shares of COal India IPO at a Cut off Price of 245, I had not received any shares or refund. In fact, when I went online to check the application status, it was showing a different applicant name instead of me & it was still showing the status as
Shares Allotted: NIL
Amount Adjusted: NIL

So I went to Link In Time at Bhandup, Mumbai with my receipt & Bank statement & told them about the problem. They told me that the refund is in process to that person & they gave me all the details of the person whose name was appearing as the applicant i.e his DMAT, bank account no & address. I was also told that they would block the refund to him & in case if the refund had reached him I could approach him to get the money back.

Then I went to Sharekhan (from where I had applied) & informed them about this. I checked the entry & instead of my DMAT, the other person's name was there. Its strange as his DMAT & mine were completely different, & his number couldn't have come because of me writing a writing 1 or 2 wrong numbers. But I M willing to overlook the possibility of a fraud, I just need my money back.

I spoke with that person & he told me that if he gets any refund he will inform me & he will transfer in my account.

I checked with him & also the application status online, he says he hasn't received any refund yet & the application status still shows Amount Adjusted: Nill.

Now, its been more than 50 days & still no refund. I know I am not the only person who still hasn't been refunded but I can't wait any longer as I really need that money.
i am sending a legal notice & here is my question-

Who exactly is Escrow? Is Escrow & Link INtime different? Whom should I be sueing or sending a legal notice to?
i tried looking up[ for

Since my payment was in favour of Escrow Coal India A/C , should I just send Coal India a legal notice or should I also send to Link In time? I know that Link Intime is a registrar but does it also have responsibility in this case?

Also, should I sue sharekhan in this for writing the other person's DMAT account number instead of mine?

Anything else that I can do to get the money faster?

Thankyou.

The mistake for wrong name is on the part of Sharekhan(who was the broker then) as I can see the wrong DMAT in the data entry.
But even if I ignore the mistake which was made at the time of data entry, refund has not been allotted to the name appearing in the application status.
I guess I will mail the registrar then, the only thng is I don't think I will get a reply soon, its very hrd to reach Linkin Time, their phone lines are always busy, & like me there are so mnay hwo haven't got their refunds back.. a quick google sarch will show you the height of irresponsibility shown by Coal Inida/Link inTIme.