Coffee day RIP OFF!!

I was in chennai this June and decided to get a cup of coffee at Coffee day (Ispahani center) and i cant believe that place is still open.
Here's my experience and hopefully will help others.
1) I ordered strawberry milkshake from the menu. The server asked me what what topping i want on the milkshake (like caramel or chocolate, cant remember) I picked what i wanted and i ended up getting a bill with Rs 30 for the topping. Now, this extra charge for the topping is not specified on the menu nor was it verbally conveyed to me by the server guy. What a rip off!!
Aren't they supposed to tell customers that topping will be charged extra?? How am i supposed to magically know that it costs extra??
2) My friend wanted blue granita or something like that. We were informed that they have run out of it and will make something else thats similar for her. She was ok with it. The blue granita, if i remember right cost between Rs 50 - Rs 60. When we got the bill, the new drink they made her, that was basically blue coloured water with no taste, was charged Rs 120.
No item on their menu cost Rs 120!!! Where did they come up with this charge, noone over there was able to explain me that.
When i insisted i speak to the manager, as expected, was told that manager was not at the store. Wonder why they are even managers. When i stromed out of the store, one of the guys who worked there came behind me and tried to hand me some free biscuits and asked me not to get mad. Talk about throwing a bone!! I clearly told him that i dont want his free stuff and its highly unethical to run business and cheat customers like this.
I am so furious about this experience. I cant believe people go to such a place and get ripped off everyday. They just throw the money and wont stand up if things were not right. Bunch of wannabes.
I am not sure if there is a forum where one can make a complaint and it will be officially looked into. If you know of any, please let me know.
Also, what amazes me is that people dont mind being ripped off.
I was never a regular to that coffee day and I wont step into that place ever again. I would suggest you dont either.

I have tried to get over this for past whatever months. But i couldn't. I constantly kept thinking that i have to do something. Spread the experience, least i can do about this.