University Of Madras — Payment of fees twice

Sir / mam
I registered for the IDE programme on diploma in information security and cyber law . I paid a fee of 6636 on[protected] . My enrollment number is A22105DIS6013. But my payment is done twice and the fee amount has been debited twice . Please do the needful and kindly refund the excess amount . Please let me know the procedure to claim the refund .