[HELP REQUEST] How to cancel a Steam Contact Support ticket if I don't have access to my browser/can't input a Steam link in the Client.

Let me explain before the easy answers. My computer that I am writing this one is the only one whose account I have access to. I have other 2 devices (laptop and phone), but my phone stopped working so I lost the authenticator/cannot verify the log in by Steam Mobile Guard. (E-Mail automatic verify and phone number won't answer or send SMS) And I lost my session in laptop. I was in the Contact yesterday but today Steam updated and I lost it/got sent to the Store page.

With this settled, I want to cancel my Steam Contact Support ticket to reupload a new one that is more detailed (the other one was very lazy and isn't really understandable). Can I or am I screwed? Did I lose my account forever?

My account was not stole, I just lost all the devices except for this one and I can't access to the Contact support link to cancel it.