I got a 72 hour suspension a coule months ago. Got a permaban a few days ago. Made up some sob story about not being able to afford the game again, but I still want to play it and they unbanned me.
All they want is their $14.99 per month. If you make a believable story about not being able to pay them anymore, they will make sure you do not leave.
Does anyone get perm-banned after 72 hours suspension? Yes.
Is it guaranteed? No.
So you'll have to take your chances and at least "bot better" than before or stop botting all together.
They mostly don't give back the account after the second offense..But "sometimes" they do.