Flipkart — double cash deduction

Address:

A 03 passport office quarters eranjipalam,nadakkave near sarovaram bio park,East nadakkave,Kozhikode, Kozhikode, Kerala, 673006

I ordered 2 stuffs worth 528 from flipkart via paylater on july month. The last date to pay the amount without fine was august 10 and i paid on august 10 evening. When i first payed via my atm debit card it showed card not supported "3d enrolment not supported" then i used my friend's atm debit card to pay and i paid it but during the first payment the amount 528 has been deducted from my account and from my friend's account later. I need my cash back and i was happy and a flipkat lover until this happened. Please take this issue seriously and solve this problem as early as possible.