I'm in a similar situation with LinkedIn.
Out of nowhere, they locked me out of my account, then they asked for my phone number, and I had to put in a code received through SMS. But that was not enough, because then they asked for a national ID card (the gall!). Of course I did not send it.
However, I kept trying to log in with the password and SMS code for a couple of days hoping that the ID requirement faded away, and now they say that I "have reached the maximum number of attempts. Please try again at a later date.". Well, duh.
So, now I have a ghost LinkedIn account with my face and my data that I can't even delete.
I'm seriously thinking about asking a bunch of people to mass report my account for racial hate speech or something so that at least it gets deleted.