Billing and refund issue

Dear Sir,

Recently I have a taken MTS postpaid data card no 8453864165 with account no 1906193253 from MTS executive SUNNY contact no 9743331179.It was not working from first day itself. This executive did not give any payment receipt and said MTS team will send a payment confirmation maill with in 24 hours but it was more than a month I did not get any thing from any one. For using 2 or 3 days they illegally charged me Rs 250 and MTS team is not giving my refund. Executives sunny and raghu are not picking the calls and not refunding my 1500 device cost. MTS is not helping anything in this regard but MTS team is pressurizing and asking me several times to pay 250 bill.If the MTS can not give refund, how they activated my data card and how they generated the bill. Now who is at fault Sunny or Raghu or MTS and who will give my refund of 1500.

I lost device cost of 1500 and 250 bill amount so total I incurred 1750 financial loss and lot of mental tension and wasted lot of time.

I want MTS to pick the device and refund my 1500 device cost and waive of 250 bill amount for illegally generating bill without authenticatioon.