Why on earth would you use 15 minutes play time and 3 hour breaks? What is the point in that? You're meant to make an account and literally just suicide it. Spinning bow string is probably one of the most botted things on RS, of course you're going to get banned quickly.
I think you need to rethink the way you bot using this script. Read the below.
PS @Molly Suicided a few bots over the weekend but forgot to screen shot proggies. But there was not a single problem. Great work.