Punjab Technical University — Don't have my Certificates even after submitting application.

Address: Kolkata, West Bengal

I have taken admission for BBA in Sep09 at Brainware Business School Sector 5 Salt Lake EP block Kolkata West Bengal. I have cleared all my semesters and my fees and have filed for my migration and Provisional Degree Certificate on 9th April 2014. (Which I could have done sooner if the LC had told me). It has been almost 3 months that I have submitted for my documents but I still haven't received the physical document. The regional office of PTU keeps on delaying the dates for handing over the documents. i do not know what kind of action i should take against them. Please help me.