Airtel / Prepaid Card Tariffs
Sudden increase in call tariffs

I have purchased two prepaid cards & that time the call rates was Airtel to Airtel 20 paise / Other mobiles Rs.1 / STD Rs.2.

But now after 3-4 months the tarrifs suddenly increased without any intimation as.

local call = Rs.2.25

STD call = Rs.2.50

This is a clear cheating.