Technical resignation central govt to psu

I was working in Railways since 1996 and applied through proper channel for BSNL and got indicted in BSNL from 2003. I even carried out the remaining bond period to BSNL too. I was allotted EPF only since BSNL is from 2000 becomes PSU. I was continuously gave the remainder to add my service from GOVT to BSNL services. till now i am not getting the proper reply. I have a doubt whether I am entitled for GPF carried over and service addition in BSNL. Pl guide me