^^ Of course. As for Chennai, I've never personally experienced anti-Hindi sentiments but people in my family have. They tell me about it.
How exactly were people rude to you in Madras ?
Actually, there were a bunch of guys along with me at that time and there were multiple incidents with people having many different strange stories to tell.
I remember one incident which happened in a bus.
I was going somewhere with my friends and I took tickets for everyone (I guess we were going to YMCA) and casually asked the conductor, in Hindi, that how long does it take usually.
He completely ignored me and it wasn't like he was busy or something.
So I just sat down with my friends.
We didn't know when to get off so I asked the conductor to tell us when we reach there.
I don't know what struck him but he suddenly started shouting something in Tamil, later on he waved his hands (in a way people ask something not expecting an answer) and finally moved away making a shrug.
One old man sitting near by also said something in an inquiring tone and then started blabbering something to himself.
People around us gave us strange looks and some sort of chat/discussion started which we presumed might be about us (but that could obviously be psychological).
One of our guys who was much younger was actually shivering and I don't blame him since the whole incident was sudden and completely unexpected.
Likewise, there were many more such incidents with others in public places, restaurants, etc.
One of my friends had a big altercation with a group of elderly men and women who had asked him that
why couldn't he speak Tamil when he was standing in Tamil Nadu.
He asked them in response that why couldn't they speak Hindi when standing in India and
literally told them to STFU.