Irctc — inconvience in seats

i am pvsn raju booked a train ticket through online.at time of booking the allotment seats are s13-70, 72, s11-64, 72.but during journey the ticket collector changes my seats as s13-78, 81, s11-72, 81.due to this change my father and mother are fell so much trouble.my father and mother ages are 63, 55 so take the action against on responsible persons
my date of journet is[protected]
my pnr no is [protected]
train no is 7255
my e-mail id is [protected]@yahoo.in