You said yourself you got banned for inflating your traffic with traffic exchanges site, which is not permitted in their guidelines. You were rightfully banned, as are the majority of people who get banned and post threads on this site about it. A quick check of their sites make it obvious. I don't know why people think they're "entitled" to making money with Adsense... but those threads are indeed tiring.
Hi Friends, Never heard from single advertisers(Google adwords) that i got 20$ back as their was some Tos issue with publisher websites, They ban publishers at 100 who break TOS and $100 goes in to google pockets it should not go to google pockets it should get refund to advertiser who got effected to due these TOS breaked Publisher websites. Regards -logon2future