Reliance Trends — debited 998 rupees instead of 499

I purchased a top worth 499, on 8/10/18 during payment throuh mydebit card server went down, counter fellow cancel the transaction after taking my atm pin and again start transaction, took my atm pin for that debited 998 rupess insted of499.499 rupess is not small amount for me, im not that of rich to leave my money like that. I already complained in trends but they not responding. Kindly look in to my issue solve as much as possible.