Pssibility to get Banned?

Is it true that it is more difficult to get banned:
1. When you start mining coal in Mining Guild because you are not staying near the same rock and everyone are too busy to notice you are doing something suspicious?
2. If I bot one day very long and other just train my Range (myself)?

Why don't I get banned If many people report me for the same reason? I ask because I have done many bad things with my main in past and I got many reports for sure. Maybe somehow Jagex didn't see them?