Can I remove all styles (dequeue) for the membership plugin?

Hi,only some of this works:

function remove_membership_css() {

// Remove plugin styles
wp_dequeue_style('membership-accountformcss');
wp_deregister_style('membership-accountformcss');

wp_dequeue_style('membership-publicformscss');
wp_deregister_style('membership-publicformscss');

wp_dequeue_style('membership-buttoncss');
wp_deregister_style('membership-buttoncss');

wp_dequeue_style('membership-subscriptionformcss');
wp_deregister_style('membership-subscriptionformcss');

wp_dequeue_style('membership-upgradeformcss');
wp_deregister_style('membership-upgradeformcss');

wp_dequeue_style('membership-renewformcss');
wp_deregister_style('membership-renewformcss');

}
add_action('wp_head', 'remove_membership_css', 99999);

Is there a way to permanently dequeue all of the css styles loaded by the membership plugin?

Thanks