I was once like you afraid of google. A client of mine received a notice about unnatural inbound links. This was particularly scary because rankings started to drop and i was doing some pretty shady stuff. Moving on. I didn't know what to do so i lied and told them that it must have been a competitor. They responded with a canned response. I tried again. Same thing. Finally after asking them what links they sent me 3 examples. They were forum signature links from years ago. So i removed them and put myself into reconsideration again. Nope, another canned response. I thought that i was done for. And i was going to absolutely lose this client. But then i decided to try one more thing. I took every link google webmaster tools had on my client and disavowed all of them. Resubmitted the site for reconsideration and BAM accepted. I then changed the disavow to only reflect what i thought were shit links and i've not only been in the clear my rankings have shot up. There is no other way around this 'penalty'.