PF related query

Hi,

I was employed with Dell from 23/08/2010 to 13/02/2015.
During this period I dont see entire PF credited to my PF account.
PF credited from Month 062012 and previous months I believe it was with PF Trust (Dell Services). 

I need to get these details, Please do let me know who to reach out and I can share the EPFO statement for the same stating that not entire amount is transferred

Any help in this matter is highly appreciated.

Thank You 
Mohammed Taher 
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