IIT Guwahati — Double debit of payment

Address:	Ghaziabad, Uttar Pradesh, 201204
Website:	IIT guwahati

While submitting the paymnet for iit form sbi net banking, the amount debited twice and still not refund.
Multiple compalint has been raised for the same but still no rerfund has been provided either from bank or iit gateway
Please help to get the refund my 2000 rs.
Ref id for both the transx is ig0bxuhqv0 & ig0bxuhnh1
Transaction dated 4/5/2016.
Name - mansi goyal
Contact no [protected]