Hifi corp refuses to amend my delivery details or cancel my order

Rilwele Ndlovu Order no: *** I placed an order last night. The address captured incorrectly and I didn’t see this. I have called various times to notify them to change my delivery address or at least cancel the order. They can’t assist me. So my order is going to be delivered to some stranger. This is a laptop by the way. Useless online and call centre which I will never make the mistake of using again