same happened to me today
8 years old account, botted 2 years straight in rs2 -> no ban!
now i got caught using GTFleshCrawlers, which i bought yesterday, i also bought my membership (3 months yesterday) wasn't playing since may before. (2 day ban)
Don't bot in the Stronghold of Security anymore, there wasn't even people around me. I was babysitting most of the time.