Trying to get a fix or replacement for my in warranty controller but microsoft site throws error (uk)

I recently made a post here about my controller getting stick drift

people advized me to log into microsoft and request support from there since my controller in under warranty

so I went to the site, added my controller through its serial number, and applied for a replacement

I complete all the necessary information, but when I click submit, I get a noticfication saying there was an error and to try again later

well, it's been a week, maybe more, and the issue persists, I tried to resubmit a few times

I tried chat support but got an ai that simply told me to retry with a different browser, but that did not work either

are there any other steps I can take?