Hero Motocorp — bike mileage

Address:

Fugewadi, 411027

I bought passion pro 110 from gold star motors pune. 84 is the company's mileage given and dealer said it will give at least 70 or 75 average. It's been 6 months i bought this bike still not getting 55 average and even back wheel also got punctured i have to change the tube with new one in just 6 months.
I went through 3 hero services centers in pune even though no solution provided by them everyone is saying like you will get average after 2000km some says 4000km and another says that after 2 to 3 services you will get good mileage. Gold star motors says that after 4th service you will get an average or after 10000km. See the difference between committed and current average of my bike. I don't know what is the issue in bike either they sold me a damaged/defected product or may be made changes in bike parts while servicing. Just helpless after visiting 3 hero services.
Need help for the same i want inspection of my bike