Fellow Passenger Had to Eat Her Words

I know it’s not the right sub, but IndianRailways won’t allow me to post this as account is not old enough. I boarded a August Kranti Tejas Express, my confirmed seat was in AC1 cabin, I boarded the train, when I was occupying my seat, a lady rudely told me that “Iss cabin ke charo seat bhar gaye hai”.. I was taken aback & reconfirmed my reservation and told her that it is my seat. She kept insisting that “Nahi yaha pe 4 already hai”.. I got frustrated & told her that let the TTE come & verify the seats. Her son saw the conversation from window & came inside to know what’s happening. I told him what is happening. He took out the mobile from His pocket & rechecked his ticket, turns out that they have reservation in another cabin. They started to move their luggage, I looked towards the lady and politely but sarcastically said “I told you this is my seat”