Randstad India — Re- PF basic changes has not been approved from your PF field office

I have courier the documents to Randstad India private limited compnay to Chennai all my documents with my joint declaration form to claim the PF amount.customer care of Randstad once said that it will take around 30 to 45 days to approved it. It's been now 1 month more.again and again I am sending the mail to any update regarding this .Randstad customer care thay are saying that we can give you appropriate time whan the basic change request can be approved from field office.they are not giving a proper response to our query properly.if this case will not solved in need to go court for the same of my case .UAN no[protected]
Empolyee code- 2140740