Airtel — USB DATACARD INTERNET SPEED IS WORST

This is the complain regarding the Internet spped with the AIRTEL USB data card, I have complained for this also, but i am still getting the same complain. Even i was told that some executive will be visiting at your place where you use it generally to check signal. But what is the use of this.

I have adopted most expensive plan which is 1103/- unlimited , but it is all wastage of money.

Could you please help me out in this matter ?