Indian Railways — regarding rail fare

Address:

700131

Fare of duronto from bangalore to howrah shown (Sleeper class) as from rs.1100 to 1496/- (Max.) in indian railway site on line, but counter has charged rs.4500/- (Mentioned in ticket) for 3 adult passengers (Pnr-[protected]). How it is possible? I dont know the dynamic fare. What is this? Counter always asking that whether you will take food or not, why this is? It is everybody knows that food is always included with the fare of rajdhani, duronto, satabdhi.