I bought airtel dth around Diwali 2011 as they were offering good discounts. but soon after getting the connections they increased the prince within 2 months. and so far it has been around 6 months they have increased the price of the package 3 times and now the basic package stands at 200 rupee which is 55 rupee higher than the package I took 6 months back.
They never took any consent and started increasing price with existing users.