Bajaj Auto — Vehicle mileage problem

Address:

55/E Ismail street kolkata 700014

I have a mileage problem with my pulsar 125 bike since from the 1st week when I purchase...the mileage is 30 to 35 km / litre till now. I already complaint 3 to 4 times to my nearest bajaj service centre millat nagar (topasia).. They told me that they are helpless. They can't do any thing just because there is no system and technology in new pulsar 125 . To increase mileage...
It's very costly for me to maintain this mileage problem in this pandemic situation