MTS / Data Card — WRONG COMMITMENT

Address:

Tiruvallur, Tamil Nadu

When i planned to buy MTS DATA CARD , mts people called up me , i asked them to show a demo , then if its ok means i'll buy a data card and i gave my address also. they came to my home at 8.30. i asked that person V.Balamurali to show the demo. His number is [protected]. he said he didn't bring the demo card. and he promised me that in this place the signal strength will be 100 % and he showed me his mts mobile signal. i told him that its entirely different. he very very requested me to buy this card. in the name of trust i bought that data card.
Data card number is [protected]. he promised me to ill work upto 3.1 mbs. after three days when its get active my speed will 0.01 mbs . even its takes 1 or 2 minutes for open a google page .some times the connection got automatically disconnected. i made complain in mts customer service. they given me the SERVICE REQUEST number, one person calledup me for giving solution, he checked something and he said he will call next day. That number is[protected] . but after that i didn't receive any call from mts. after two days when i callup they said the complaint already closed.i dont know what i have to do. still my net connection is too slow. kindly do the the needful.