Employee's Providents Fund Organisation [EPFO] — Pension calculation for private sector

Address:

135001

Myself vijay singh rana epf no hr/knl/4966.

My pension as per calculation is coming very low so i want to get it rechecked again.
My ppo no hrknl00036488.
I was working in private organization and complete my 58 year age on 7.1.2017. My total service is 3 4 year

As per epf pension rules the my pension will be appx rs 3450/_ but i got only rs 2755/_pm
So pl rechecked the same and inform me.