/**
     * Check if customers are allowed to cancel subscriptions
     * 
     * @access public
     * @return bool
     */
    public function allow_customer_subscription_cancelling()
    {
        if (Subscriptio::option('customer_cancelling_allowed') && apply_filters('subscriptio_allow_subscription_cancelling', true)) {
            return true;
        }

        return false;
    }