Amazon India — fraudulent transactions

Fraudulent purchase of rs.50000/- was done using my sbi debit card ending with 2813 on 31.12.2019. I complained about this at amazon customer care, however they have processed the order inspite of me lodging a complaint with them of the order to be a fraudulent and transaction done by my debit card although i have not done any such transactions whatsoever. I registered my complaint on 01.01.2020 but still the invalid order was processed. I also received incorrect emails from amazon customer care which shows amazon is not at all serious about the fraud that occurred. Kindly look into the issue as this was my salary amount and the only savings for bread and butter of my family.