Mileage Shop Liars-Deceivers-Manipulators-Conartists INC , Internet

I purchased the product called "Mileage Saver  Complete Kit", from the Mileage Shop.  I mailed the order form with my money in May 2012.  I received the product in the mail and installed it on my truck in June 2012.  I tested the product and found NO improvement in performance, especially MPG's.  I contacted Chris about the lack of improvement.  He said to drain, flush, and refill the generator and reset the computer for improvement.  I did  so and still NO improvement!!  I contacted the company several more times during the following weeks and I finally suggested that I return the product to them for testing.  In August,2012, I returned it,  later that month they returned it back to me saying that the product was fine and working properly.  I installed it again in September 2012, tested by driving another 2000 miles, still NO improvement.  Now, I continue to ask for a refund for Lack of improvement.  They continue to make excuses and refuse my requests!!!