Stole Steam account and do not return

Guys, tell me, from the playground admins, can anyone help get the Steam account back? wrote in support, at first they did not answer at all, and now when I go to the request page it gives this "error_unknown (ADR_1825663951)". If anyone can help, then I have receipts from purchases to this account through the QIWI payment system, there are letters with information from a year ago that this account was linked to my mail. in general, write if anyone can help, I will not stay in debt ...