Employees Provident Fund Organisation [EPFO] — pension not settled

Address:

Rangareddy, Andhra Pradesh, 500035

I worked in bhel from 1979. To 1996 and from 1996 to 2014 worked in ge power services (I) pvt ltd.
I received pf and gratuity from both organizations but for pension only ge service was shown as received in hyderabad epfo office. They advised me to submit form 13 and get it done thru bhel.
Acccordingly i requested bhel nagpur office and they forwarded form13 to bhel pf office, chennai. Chennai office issued k-challan annexure to epfo delhi and copy to me in which my bhel service is shown.
I have sent copy of annex to epfo delhi north office accountant, ro delhi and ro barkatpura hyderabad to settle pension by taking both bhel andge tenure.
This was in august/september, 17 and i contacted various officers by phone several times but nothing moved forward.
It is distressing and vexatious and l request you to expedite. The pension issue