Gamertag suddenly changed while I was away from my console (it didn't include profanity)...

I Shouldn't have to spend any money to change something Xbox did. When i'm playing an M rated game like call of duty or something where people are screaming Out *** this and *** that and I have G spot in my gamertag and suddenly its profanity... I understand
if they give me the ability to change it for free then i woudn't care to change it but it's straight up retarted that I need to pay money to change a gamertag that doesn't have any thing wrong with it. I've been supporting xbox since the original and had this
HIGH PROFANITY GAMERTAG for a long time and suddenly now it's a problem. All I get are laughs from players.

But it WAS included in my gamerscore on the 360. Ever since Xbox One release day. It just suddenly wasn't after I changed my gamertag today.

Hey there, I'm sorry to say unfortunately there is no second chance for that and will need to pay the 800 Microsoft Points transaction to change your gamertag again. Ultimately, in the Code of Conduct it states you're responsible for your account so there's
no leeway given for this kind of situation.

Can you allow me for changing mygamertag I didn't know it ?

Because for changing my gamertag I must pay 9,99€ for that while I didn't know that.

Hi,

On your personal Xbox feed, you would normally get an automatic post from your account stating that your gamertag changed from “...” to “...”. I don’t know if they took away this feature, or if it just hasn’t been working for a while?

From my knowledge, I don’t think there is a current way to check for previous/past gamertags.