My Username >:(

So on 4-5-2020, I decided to open the game bar on my laptop, and I think, hmm I'm going to change my brother's username (this is important later) which was too similar to my current one, so by clicking windows+G I see his name and go to the change page,
but I go to change it to TransactionX which has a resemblance to his other socials and when I change it, I got a call from my friend asking me why I had changed my name, and I said that I didn't, but today 4-6-2020 I go to open my Xbox and to my surprise,
it changed MY username and after multiple attempts at changing it not being able to use xXcrashspeedXx I try ItzSal4d but I have to pay 9.99!!!!! DOES ANYONE KNOW HOW TO REVERT THIS! CAN I APPLY FOR A FREE CHANGE I HAVE NO SPARE MONEY!!! And Microsoft if you
see this I would like to be heard as a loyal Xbox user I have been using it since 2012 and I would appreciate some courteously in a free name change due to the WEBSITE Malfunction, for the future, people should be able to apply for free name changes if the
where accidental. VERY DISSAPOINTED in this crazy money grab and scam!!!

:)