Apparently, the person that called and upgraded my plan to "Airtel-UL-POWERDATA 3000 500GB" messed up somewhere and now I have been charged with Rs.600 for the phone calls, which were free before. This was despite the fact that she confirmed that the phone plan would remain the same.
Before I write another 'guns blazing' email chiding their high-handedness, I wonder what you guys would do to resolve this issue amicably and hopefully get the charge waived.
Would greatly appreciate any help on this. Many thanks in advance.