Sri Chaitanya Techno School — fees and not providing information

Address:

530017

My son joined in sri chaitanya techno school MVP branch, visakhapatnam at his LKG with Rs.2000/- concession in the fee. After that in 3rd standard we have shifted to another branch in the same city and continued with same fee structure and concession. But, when my son shifted back to the same old branch now they are telling that although you came back, due to internal transfer the concession is reduced to Rs.1000/-. (This was not informed me. At he time third term fee payment i came to know this)As a middle class person and due to financial problems i requested to maintain the same old concession, but it was refused and informed that it is now in central office hands. when asked about the contact number of central office they are not providing the number and telling that they wont respond your query. I searched it from net and got a number of central office. After continues calling to that number, they gave a mobile number which is AGM's number. As no body is responding from that number i sent and SMS to given AGM's number ([protected]). there is no respond from the administration.
*When I am asking about to whom i shall contact about fee concession the concern branch principal is not responding.