How to unpermban my Xbox account that's been banned for 1 and a half year?

Nothing anyone can do.

You need to appeal a ban within a year of it being issued.If it's been a year & a half then it can't be appealed.

It has been like half - 1 year from when i was able to access the account.

damn, i feel your pain. i was hacked on september 25th. i had over a year and a half left on my account. hacker bought a family plan and points and transferred them to their account. you would think that it would ring a bell that a person buys a family plan
when they still have over a year and a half of service left. but the even dumber thing is that, it updated my account to the 1 year gold for family plan, basically saying my origianl remaining time would have been lost. how dumb is that...

I have not been suspended or banned??? They just keep locking my account and I have to get a code sent to a phone every time. How is that getting banned? I have called Xbox support 4 times over the last 2 and a half weeks and they claim it has been passed
to someone else. And that I would hear from them within 3 days. That was over 2 weeks ago. If my account was banned I wouldn't be able to log into it at all. So how am I banned? I am not

i have 4 years on my warrenty its been 1 and a half about so far with no problems