public function abuseReport($start = 0, $limit = 2000, $string = null)
    {
        $payload = array(
            'id' => $this->listId,
            'start' => $start,
            'limit' => $limit,
            'string' => $string
        );
        $apiCall = 'lists/abuse-reports';
        $data = $this->requestMonkey($apiCall, $payload);
        $data = json_decode($data, true);
        if (isset($data['error']))
            throw new MailchimpAPIException($data);
        else
            return isset($data) ? $data : false;
    }