Mahindra Two Wheelers — Bike average is not good at all

Address:

Gurgaon, Haryana, 122001

I bought my bike in september 2015. I drove my bike 4100km and average of my bike is very poor after being serviced by mahindra service centre 3 times.
Last time i spent rs.610 for petrol tank and my bike gave me only 310km atmost.
Also after driving above 48km i t started vibrating.
Slow race is also not properly set after asking again - and again to customer care.
Siren issue one of the very intolerable issue.