The transactions on the blockchain network are irretrievable
In case you have sent funds to a wrong address, it means that nobody has the keys to that address, and your funds are most certainly lost forever. Before initiating a transaction, please make sure that the destination address contains no mistakes.
However, you can cancel your withdraw only in case it has not been sent to the Blockchain network for confirmation I.e. your withdrawal does not contain a transaction hash in the latest transaction column.
Click on the cancel button which will be visible only in case your withdrawal has not been processed by the exchange.