Tata Docomo — Balance debited without any information

Address:

Kolkata, West Bengal, 700051

My mobile no is [protected] and I'm a tata docomo user of kolkata. on 25th oct 2015 i go mayapur in krishnanagar in nadia district. which is a circle of West Bengal. i trying for opening for internet from my mobile. but their server is too slow, page not open properly. after that the company will charged me about Rs.100 up. But i have 77MB internet balance. when i change my location from kolkata to krishnanagar this company don't give me any information about the internet charge or call charge by sms or any other alert. after i coming kolkata 26th oct 2015 i call tata docomo customer care, to know why the charge for this, i have 77mb of internet free in my account. but they don't adjust from my unused 77mb net balance. they deduct Rs 100 + from my main balance. i talk their senior executive for refund my balance. then he said in 3 hours i got my money back. but they refund my money only Rs 4.80. i have the voice record of the conversation. next day 27th oct 2015 i call again tata customer care for refund the balance, but they denied for the refund. now i want to punished or legal action about tata docomo company. because the company robbery our money.