It Is possible to recover the banned account. I think I do spamming so I got banned. I try to appeal via email and no reply.
"You have been permanently banned by a forum moderator, probably due to spam or plagiarism"
You will need to provide your account details too. As you already stated that you spammed, I think there is no chance you will get your account back.
I never saw anyone unbanned after spamming. You should forget your old account &
lock this topic.