Deficiency in service of railway staff

Yes you can file consumer complaint even when you lodge complaint in complaint book.

Did u raise any objection when he is watching the movie on his mobile during working hours?

yes i raised objection after that he removed headset from one ear(earlier headset were on both ears) and started arguing with me and asking me to pay the incorrect amount and quoted " how will i know that there is a concession" this after me clearly mentioning about the concession details in the form at appropriate space provided.

If you file a complaint before the Consumer Court it will be against the railways and the railways will try to defend themselves in the consumer court and, if required, defend the booking clerk also. The booking clerk will go scot-free. You should have videoed the booking clerk himself on your mobile phone and complained to the higher authorities in railways. Then only there is a chance of punishing the booking clerk. The purposes of writing in the complaint book and complaining before consumer court are different. Writing in the compalint book is against the booking clerk. Complaint before the Consumer Court is against the railways.

You should have compliant this episode after recording the events in your mobile to superior staff calling railway help line number 

Or 

Visited Sr officer office then

Now no point in consumer court etc