Account hacked and stolen

About two weeks ago, my Microsoft account (including my Game Pass subscription) was stolen. After spending two hours figuring out how to reach a human representative, I waited several days only to be told that the personal information I provided was either insufficient or incorrect—meaning they couldn't verify my identity or confirm that I am the rightful owner of the account—and that they were closing the case. In the meantime, I have no access to my account; furthermore, I’ve had to block my bank card and, with the help of my bank, stop the Game Pass subscription payments. I don’t know what else to do. I have already reported the incident to the police and to the UK’s fraud reporting service. It is truly absurd that I have no way to contact Microsoft. Has anyone else had an experience like this? Or, if someone from Microsoft could please contact me, that would be great—please.