Consumer Redressal

I have purchased MBlaze Ultra wifi from MTS on 8th Nov 2013 paying Rs 2400 after seeing splashy advertisements in leading newspapers promising speeds upto 9.8mbps. I had checked with the technician whether it will be capable of giving average speeds above 3mbps since I already had DSL and 2G connections from other providers at home consistently giving above 2mbps speeds. On confirmation by him only I purchased the device. Unfortunately from day one when I check the devise at different times of day, more than 80% of the time it gives speed below 1.5mbps and has never even crossed 3mbps once. I have raised several complaints with no effect. Please arrange to refund the amount and take back device.