Perm-banned after no warning bans or chat bans.

Hi, Lol community, on my old account, LostApprentice, about 1/2 a year ago, i was perm banned. to my surprise, i found this out when i came home from vacation. it said that i was perm suspended, without any temporary or warning bans to let me know what i was doing wrong. all i can think of as to why is got banned was that someone thought i was hacking, which i clearly wasn't. After i learned of this i tried to contact riot support. For some reason i couldn't get into my e-mail account to even send a support ticket, the email was not something i recognized and when i checked my info of my account the last 6 letters/numbers were *'ed out. I don't know if this means i got hacked or not, but this e-mail was not like an email i would use, i went to go change the e-mail, but i had to know the old one to change it, let me know if any of this has happened to any of you in the comments below.