Every time you run a script you have a chance of getting a permanent ban. We always recommend that you DO NOT use bots/scripts on an account you actually care about and enjoy playing.
That being said, I also had 6 accounts get 2-day bans and have been running them 24/7 since they got unbanned, I am yet to be banned again but it is likely to happen sooner rather than later. They could last 5 minutes, they can last 6 months. It's just a matter of time.