Mts — Wrong commitments about plan by retailer and no action from service provider

Address:

Chennai, Tamil Nadu, 600048

I brought new MTS postpaid connection for RS 1300 and plan is 999. Seller told something about plan which is not actually available in plan list. I am not aware of it and retailer didn't show any plan details he just explained about the details. Retailer gave so many commitments about 999 plan. those are, 1, 24 GB download data + unlimited video streaming [example face book, whats app, you tube and etc). 2.100 rupees wavered from every month bill 12 Months from card activation. 3.I will give one Lab bag and power bank after the card activation. Finally he says 'Everything Diwali Offer'. I called customer care for speed issue in day 1 and they are saying there is no any offer like this. So I requested them to start enquiry against retailer. They are only blaming me. So I requested them to cancel the connection and asked refund for card. No answer for repayment. But they are asking me to pay the bill amount and they only accepted cancel request. No words for retailer's wrong commitments. I replied them minus the bill amount from card rate and i will pay remaining and will return the card too. No answer for this. How to handle this issue ? please give your suggestion. My Card No [protected] Here I have attached the mail communication.