Lost my 2FA access, Rockstar support can't determine if I'm the owner, now I can't submit a ticket
I lost my 2FA key on Google app a while ago(it was not backed up in the cloud), and now I can't access my Rockstar account which I created in 2014. I tried opening tickets, only got automated response that they are unable to determine if I'm the owner. I provided them with a screenshot of them sending me notification about a friend request, I provided them with a cd-key I used to activate GTA 5 in 2016, I provided them with my linked accounts. I don't remember when exactly I created the account. All I know I only get automated responses. I managed to dig up an e-mail with confirmation of 2FA creation of my account, but now I can't submit any new tickets. I tried from a phone, from different browsers on my PC and nothing. Is there anything I can do now? I'm totally lost and very displeased.