Indian Oil Corporation [IOC] — payment blocked amount not refunded.

Sir i am purchase lpg through online that time purchase rejected and my amount was debited, but still my debited amount was not refunded, i am request an bank they said we are not to give refund because of you are transact by neft and i am contact to my lpg agency they said we are dont know, and i am contact to ioc they said we inform to your agency they give solution, but still my transact amount not refunded, my lpg distributor is sunther gas agency and my consumer id 024785 my mode of transaction neft, utr no: ioban[protected] transaction date dec 24 2018 transaction amount 875.67, now i want refund the amount.