Indian Overseas Bank — my two transaction was failed but not refund

Address:	No.27 mettu street nathanallur village walajabad, Kanchipuram, Tamil Nadu, 631605
Website:	Indian overseas bank

Ac No.[protected]
Indian overseas bank
Walajabad branch
I have using debit card payment on mpokket loan repayment amount Rs.1199 on 03/06/2019 the transaction was failed but not refund.
And another transaction was 10/06/2019 in flipkart amount Rs439 that transaction also failed.But not refund the two transaction.please refund my amount Rs1199+439=Rs1638.
Thankyou
Yours faithfully
R.v.lokeshkumar