You hav not replied pointwise to all points.
Try to understand during online discussions the draft of query should be able to convey a clear message.
What is factual and actual date of joining in new company; 01st August 2011 or 01st April 2013?
If factual and actual date of joining in new company; 01st August 2011 (a son salary slip as per you) then why PF contribution was allowed w.e.f. 01st April 2013?
You may also post: What was your designation and nature of duties in old and new company?
What was your salary in old and new company?
What is this old and new company; Commercial or Industrial?
What is line of business; of old and new company?
How many employees were employed in old and new company?
Narrate facts properly.
Reply to all points,pointwise, from beginning, of 1st post in this thread.