Honda Unicorn — mileage problem and engine problem

I purchased unicorn bike on 11th March 2011 and right from the beginning I was doubtful of its mileage. Once I got it checked up at the authorised dealer, it came out to be 66 km/lt. But the vehicle never reached that target even after all free services. The average comes to near about 45-48 km/lt. Second problem is of the shock up. I always told them that there's some sound from the rear but they did not pay any attention and did some packing here and there. Now when I got my paid service done at another authorised dealer, and he told me that the stock up of the bike has lost its tension and thats why there's the sound.

Now if these authorised dealers donot attend to their customers complaints then how can one be assured of their best customer care.

Sharadchandra Danej.