I also got banned during the April 7th wave by a chair manufacturer that I have since learned is complete trash (I wish I discovered this site a while ago!). Anyway...I inquired about how to wipe PC following a permaban and this is what they suggested (I edited the instructions slightly to not totally out them, but their name rhymes with "cattledog" lol...:
*I just wanted to post this here to check in if this is legit...seeing how I got screwed once already, not sure they have my full trust haha.
"Here's you can do to unban your computer that works 95% if you do it right.
1) You need to reset your Windows, like fresh new computer. If you have personal/important files, you can back them up.
2) Call your Internet Provider to change your Public IP Address, payed Static VPN will work. Check this using NordVPN:
[Only registered and activated users can see links. Click Here To Register...]
3) Don't reinstall the games yet. Buy spoofer
4) Follow the setup guide on how to inject spoofer:
5) Now's the time you reinstall the game you wanted to unban > Now do Unban Process Step 8
6) Create a new Battle.net account using your phone using mobile data 4G/5G
7) Restart computer > Inject Spoofer > Open Static VPN(if you have them) > Open game with new account. Note: Don't inject any hack yet until level 30 or more."