支付网关插件响应功能不适用于WooCommerce

Question

When URL come back from payment gateway as response, my below function is not working .

class WC_Gateway_Pay extends WC_Payment_Gateway {
public function __construct(){
        add_action('woocommerce_api_' . strtolower(get_class($this)),
        array($this, 'check_pay_response'));
}
 function check_pay_response(){
        global $woocommerce;
echo "durgesh";
}

My payment gateway response url is http:/xxx.com/my-account/. I do not understand how to call this function when response from gateway.