@Thielewapper
Typically speaking, if an account has been banned we won't be able to assist with any changes until/unless that ban is first removed by the Terms of Service team via an appeal. That would include linking/unlinking and so on.
If the reason for a ban was due to messages sent in chat, those specific messages would generally be included in the initial email from our ToS team.
As far as sending joking messages between friends, those messages would need to be reported by someone and a violation of the Rules of Conduct for action to be taken.
We wouldn't be able to speak to your particular situation on the forums as you'd need to continue working with the ToS team in that regard, but hopefully that clarifies some things in a broader sense.
@bloodihunter
Please keep in mind we cannot review your status or any account bans on the forums. If your account was hacked and you believe a ban was applied incorrectly, please be sure to go through these security steps and then create an appeal here so our Terms of Service team can investigate further.