Maxbhi — Request to cancel the order

Hi Mam/Sir,

I have accidentally placed a wrong order. I tired cancelling the order as soon as the order was placed. But there is no such option to do so. Also tried contacting maxbhi customer support. They are not reachable. There is an option for replacement. But the one which I'm looking is out of stock. So I have to cancel the order. Please help here?