Consumer Redressal

I purchased a MTS wi-fi data card postpaid, ordered through MTS online shop. The data card has been delivered to me on 30.01.2015 and also documents also submitted on that day. On that time I checked the device as out of order and I said to the executive that no light blink on the device, then the executive said that if any issue will occur, then they will solve out, but now they are not responding. The executive mob. no. is 9143424864. Next my connection has been activated on 02.02.2015 evening. My MTS no. is 9143026295. But my device is not working from the starting. So I can not use the device till now. Already I logged 4 complains (Ref- JAN/22542, FEB/411, FEB/1098, FEB/1306) in customer care, but all resolution has been came out that the problem has resolved This is a very bitter experience to me. So, I request to make an arrangement for returning my device from me and closing the connection and refund my amount Rs-1199/- as early as possible.