Hero Motocorp — mileage problem

Address:

Chandauli, Uttar Pradesh, 232101

I bought hero splendor on diwali 2016. My hero super splendor not giving sufficient mileage. Only available average 33 -36 per litre. I have 3 times seviced from service center. So not solved my problem.
Model : hero super splendor
Registration no :up 67 r 3023
I have service in avtar hero mughalsari for 3 times. But not solved the average issues.

Your website shoes 87kmp miage but i am getting 33kmp to 36kmp milage after 3 services also i am getting same.

I don't no why hero make this kind of bikes and why they saying 87kmp.

My personal trust is finish from hero. If company has any buy back offer then i want to return my bike to company.