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Your callback should only look like this:

def listener_callback(self):
    self.destroy_node()

You can check that the node has been killed through command line: ros2 node list

Note that the rclpy.spin(minimal_action_server) will not terminate even if you kill the node

Your callback should only look like this:

def listener_callback(self):
    self.destroy_node()

I tested this with the examples_rclpy_minimal_publisher/publisher_member_function. Here for example you can call self.destroy_node() in the timer callback after N messages have been published.

def timer_callback(self):

    if self.i > 5:
        self.destroy_node()
        return

    msg = String()
    msg.data = 'Hello World: %d' % self.i
    self.publisher_.publish(msg)
    self.get_logger().info('Publishing: "%s"' % msg.data)
    self.i += 1

You can check that the node has been killed through command line: ros2 node list

Note that the rclpy.spin(minimal_action_server) will not terminate even if you kill the node