Education Loan — non receipt of education loan subsidy for long time

Address:

Palamu, Jharkhand, 822101

Dear concern,

I had taken education loan from punjab national bank in november 2011. I started receiving subsidy in my loan account after 2014 but for last long time i am not receiving any subsidy in my loan account.
Kindly provide me information regarding this so that i can get to know the actual issue. I was getting the subsidy amount in a time interval of 3 to 4 months but now its been too long since i have received any subsidy amount.
Thanks