22626 SBC-MAS Double Decker - எப்பவுமே டாப் டக்கர் - Vijay Baradwaj

Can anybody from kolkata tell me whether any PRS in Howrah station accept credit cards?I know the one in fairly place has a counter for credit card options.Actually I need to cancel one of my ticket booked through PRS.Kindly suggest me some way out.Actually I'm little confused about the confirmation option also.
How long the PRS remain open on Sundays...

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