Dear Mr Sowanan,
How you are saying PF Interest amount is not credited in your PF account? Are you having any record evidence?
If you have not having any record evidence, log in
Epfo (Govt. of India) => EPFO - UAN SERVICES {Available Top Right Corner} =>For Members=>UAN Member Portal =>Know your UAN Status {Available Top Left Corner} => Submit your PF details=> You can know your UAN.
Then
Epfo (Govt. of India) => EPFO - UAN SERVICES {Available Top Right Corner} =>For Members=>UAN Member Portal=>Activate your UAN=>
If you have complete the above process, your may download your PF pass book, their you may knows all the details regarding PF transfer & PF Interest details for the FY 2013-2014.