public static function get($type)
    {
        $instance = null;

        switch ($type) {

            case 'IM/Send':
                $instance = new SendService();
                break;

            case 'IM/Status':
                $instance = new StatusService();
                break;

            case 'TFA/Request':
                $instance = new RequestService();
                break;

            case 'TFA/Validate':
                $instance = new ValidateService();
                break;

            default:
                throw new \Exception("Error - Unknow service", 1);

        }
        return $instance;
    }