Blizzard can unban accounts, but it doesn't happen because if you got banned it means that you were banned. There has been cases but they are super super specific. The last ban is never automatic, so it's not like everyday accounts get permanent ban without checking the case..
Besides, does Blizzard ban all accounts?
To the topic creator: Blizzard bans PER Licence, you are totally fine if you have 8 WOW Accounts and all the Blizzard games in just one account.
Similarly, how do I unban my overwatch account? How to Submit an Appeal for Overwatch Account Unban
- Based on your Overwatch region, change the URL prefix to US or EU!
- Log into the battle.net website and go on the Contact Support and select Overwatch;
- From here, select Account -> Can't log in -> Appeal ban or suspension;
- Select a contact channel -> Web Ticket;
Secondly, how do I unban my WoW account?
How to Submit a WoW Unban Appeal
- Based on your WoW region, change the URL prefix, such as from US to EU or any of the other ones!
- Go to the Blizzard Support page, log into your account then select World of Warcraft under “Blizzard Games”;
Does Blizzard ban IP?
Blizzard hasn't used IP bans since ~2010, they do however use Hardware ID bans, which bans the computer, since in most countries, and in the US especially, your IP isn't static, and it's really easy to get a new one.
Related Question Answers
What happens when you get banned in overwatch?
CS:GO - Overwatch System. Overwatch bans are non-negotiable and cannot be removed or reduced by Steam Support. If an automated cooldown or ban is determined to have been issued incorrectly, it will automatically be rolled back by our servers.How do you know if you're banned from overwatch?
If you're banned from competitive, it will be grayed out in the menu, and you'll likely receive a notification upon getting banned. You'll be banned in increasing increments before being pulled from a season entirely, so it's going to be nigh impossible to not see it coming.How do I appeal my Blizzard ban?
If one of your game licenses has been suspended or closed due to a violation, you can appeal the penalty by submitting a support ticket. Before you submit an appeal, review the following: The account holder is responsible for the account's behavior. We apply penalties no matter who was playing at the time.Will Blizzard ban you for buying gold?
If you accept a trade for a large amount of gold you are giving nothing in return for. You can be banned for it. Blizzard doesn't have to prove you paid for it. Blizzard locates Gold sellers and doesnt ban them for a little bit then does a big ban to anyone who traded with that toon.How long is my overwatch suspension?
Every leaver is immediately suspended for 10 minutes and each subsequent leave increases their suspension until they're banned.How do I contact Blizzard?
For customer support relating to Blizzard games, please visit For stock transfer and registrar services, please contact our transfer agent, Broadridge Corporate Issuer Solutions, at (800) 685-4509.Can you get banned from overwatch?
If you want to get banned, you just threw money out of the window and if you want to try the game again at a later time, you won't be able to unless paying it a second time. Just keep playing.Can you appeal an overwatch ban?
If one of your game licenses has been suspended or closed due to a violation, you can appeal the penalty by submitting a support ticket. Before you submit an appeal, review the following: The account holder is responsible for the account's behavior. We apply penalties no matter who was playing at the time.How do you get rid of a VAC ban in CS GO?
VAC bans are permanent, non-negotiable, and cannot be removed by Steam Support. If a VAC ban is determined to have been issued incorrectly it will automatically be removed.What time does the overwatch season end?
The transition seasons usually occur at 6 pm CT during the evening hours. The 19th season ends at 12 pm CT and the 20th season starts immediately after. Be sure to keep in mind this earlier transition time if you are a player that logs competitive hours late in the evening.What happens if you leave an overwatch competitive match?
Currently, the penalties for leaving a Competitive game are as follows: Receive 75% less XP for a number of subsequent matches. Receive a loss for the match along with a decrease in skill rating. Receive a 10-minute penalty in which they cannot join another match.How do I delete my Blizzard account?
Deleting your account is permanent and will remove personal information and all games associated with that account. To submit an account deletion request, go to Blizzard's support page and Delete Blizzard Account. There's a link at the bottom of the description to begin the process. 
