Indian Railways — not allotted lower birth in 3a coaches

Address:	Alwar, Rajasthan, 301001
Website:	IRCTC

I booked 2 birth in hwh to ndls rajdhani exp on the opening date (Erp), before 4 months. I also paid full eligible fare for my 7 years old girl child. My complain is why ir not allott only one lower birth, whereas i will travel with my family, and there was already a column for choosing birth in reservation slip. I came to know that indian railway sell the most demanded ticket in high price as premium ticket and make us nothing but ullu. I have already a bitter experience in last year on same train. If there was any one who can help me.