Airtel — international roaming data overcharging

Address:	Mohali, Punjab, 160062
Website:	airtel.in

I have been sent a bill by airtel amounting to 34000 rupees, whilst on international roaming in iran.
tel no. [protected]
The network available there was 2g, that too super slow. As per my phone data records, i have used around 40 mb, whilst the customer service is telling different data amounts every time, 40 gb, 4 gb. First time they called and told me i have been billed 4 lac rupees, and its discounted to 34000.
After that only the guy for recovery is calling me regularly, whilst the airtel customer care guy is himsel[censored]nclear about data billed, and on every call telling vague numbers.
If such a big company is doing such kind of cheating and fraud, the only recluse might be the consumer courts and to sue them for 10 times of the amount billed, and the mental agony caused.