Flipkart — Lost amount because of worst service

I ordered a phone for 40000 on 28th aug i had to receive my product on 02seo but it was failed and postponed to 8sep when i asked on 2sep later 7 sep the product was cancelled without any information.since i ordered under EMI now i got processing fee of 460 and GST 80 rupees from bank extra eventhough my order amount has reversed. I called bank and got information that processing charges from Flipkart who has to payback my amount. I called Flipkart 1000 manytimes CS staf simply replying with same story that my complaint will be taken.now because of Flipkart error i am paying extra 600 rupees amount to the bank