Yes Bank — refund issue

I did online transaction with yes bank by my debit card. 476 amount debited two times because of transaction failed. I complained on 14march 2018 but not get refund yet. Also on 15 march 349 amount debited from my account 2 times. They are taking so much time to refund. And yet not confirm of refund. My complain no are cs[protected] and cs[protected].