that's a myth and simply not true. if they actually delayed bot bans by up to a week, gp would be like 2 cents/mill. they delay bans up to a day (next ban wave). the only time there would be a delay that long is if it was completely manual (eg. you bot, and then a week later your friend tweets jmods that you are a bot and they look at it)
The vast majority of real players don't use the official client..