Hi Nithin,
Instead of telling, few milliseconds are essential to complete an order, trace back which trade pair (buy-sell or sell-buy) already being completed and don’t allow the second sell or second buy to happen. If all it happened, have a provision to cancel it.
On 25th, same thing happened to me. There was no cancel option for the order. I tried calling whole day to your number always busy or number not registered. I mailed on 25th regarding this no response from your end. I have been calling from that day they simply say RMS team is looking into the problem. I came down to your office also, I was convinced the way your software implementation. I kindly request you to look at the problem and let me know who will recover this loss.
Thanks.