Flipkart — Didn't receive refund money yet even after 17 days

Address:	Pune, Maharashtra, 411014
Website:	www.flipkart.com

My order no: od[protected]

Flipkart is cheater i booked samsung galaxy on8 on 2nd october 2016 they cancelled my order on 3rd october saying that i had booked the mobile for second time so i will receive the money in my sbi credit card in 3 business days and they have initiated the payment from their side.
I called them again on 5 october they said you'll receive it in 8 working days after cancellation . Then i called them on 11 october they said 8 working days are over but they have initiated from their side jsut some technical issue with bank i told them to send reference number they sent me mail and wrote that they initiated the payment on 11 october. Then i called customer care n asked what's happening why you wrote that you initiated on 11 october they were blank after hearing that n started saying sorry.
Not today it's 19th october customer care was going to call me before 7pm i have not received any call from customer care not i have got money from flipkart intact my bank has charged me interest of 450 rs because i didn't pay them the payment that i did with flipkart for booking my order.
Who is going to return me this interest?
When am i going to get my money along with interest back?
Please help me flipkart is cheater don't book and orders from this website they r just cheaters and customer care cannot care customer they say they don't have any resolution for it??
Today 17 days have passed i have not received my hard earned money back so sad : (
Already they cancelled my order n also i am getting statement in which i need to pay interest so bad.

My order no: od[protected]

Fake flipkart company
I won't buy any product from such a third class company