Bharat Petroleum [BPCL] — refund not received

I had booked refill on 06/07/2019. The payment of rs609 was made through website. The amount was debited from my citi bank. But bharat gas site showed payment pending. Ccavenue confirmed having receipt of payment. But still amount not refunded back to me inspite of repeated complaints with customer care
My bharat gas consumer no is 5658.
Please rectify this problem asap.

Regards,
Kiran