Jawaharlal Nehru Technological University Hyderabad [Jntuh] — duplicate transactions

I need to complain regarding duplicate transactions towards my OD. The transaction status said transaction failed for 2 transaction but I see the money got debited thrice while it was supposed to debit only once. I tried calling all the numbers possible but I don't think anybody cares. If the transactions are not reversed I am going to get a lawyer and proceed in a legal manner. Just wanted to check if this space helped with my concerns. Thanks.