Cron Job Not Working, Restart Services

I'm having a bit of trouble with one cron job that doesn't seem to work.

I have others scripts that run hourly fine. However this one does not.

The script:

restart_monitoring.sh

Code:
#!/bin/bash
service iptables stop
service iptables start
/root/bandwidth_rules.sh
/root/portforward_config.sh
exit
The two scripts at the end just load a lot of iptables rules back in.

The cron job should run hourly (59th minute)

The cron job entry

Code:
59 * * * * /root/restart_monitoring.sh
I have restart crond to enable the new job, still doesn't run.

The job is to restart iptables, thus flushing all rules that I have running, then reloading them. I have figured out the problem to be with the "service iptables stop/start" command, it doesn't seem to like doing this...?