A few months back, my main botted account (Not incredibly high leveled, about 100 combat, 1400 total) was banned for 2 days for macro major but it was weird too, I hadn't been botting for over a week due to other stuff going on.
If they had actually caught me scripting I'd have a bigger ban, the 2 day ban must've been a trigger of sorts in the way I was botting, they thought I was most likely, but didn't have concrete proof?