Steam Account Has Been Stolen and I Can't Access It Despite Support Request

My Steam account has been stolen! My email address and password have also been changed, and I can't access it in any way. I have followed all the necessary ways and opened a support request, please help. I also entered all the information about my first email, the card I paid, etc., but there has been no return yet. Russia, St. They entered and stole from St. Petersburg. The stolen mail extension does not appear either. Please help me get it back. ref. code: HT-3DP3-T2PX-7C64