Purulia Express: লালপাহাড়ীর দ‍্যাশে যাবি? চিন্তা কিসের লো? বিকাল বেলা হাওড়া থেকে পুরুল্যা এক্সপেরেস পাবি। - Dip

I had the following confirm ticket of 22917 (16/12/2015)
Passenger 1-A1 19
Passenger 2-A1 21
Passenger 3-A1 20
Now I wanted to cancel the ticket of Passenger 2.
So...
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I cancelled it on IRCTC. The cancel receipt says that Passenger 2 is CAN. But when I check the PNR, it shows:
Passenger 1 -A1 19. CNF
Passenger 2 -A1 20. CAN
Passenger 3 -A1 21. CNF
This means ticket of passenger 2 is cancelled but seat of passenger 3 is cancelled.
Can anyone please help me what should I do?