What other options are there? I'll go with the CC option if nothing else works.
You can call and that was a faster option for me to get responses.
In their terms and conditions you agree to arbitration. IANAL so I don’t know if this is binding in all jurisdictions. Amusingly(/not depending on your side) there are stories in their forums where a guest has taken the host directly to small claims court.
You can then keep ringing that number without going back through the app. First person you speak to will likely be the first line support and you will need to be transferred to their resolutions team, you only seem to be able to escalate 1 level before being told the decision is final.
I would record everything because you will get given contradictory statements and the transcriptions if you request them are inaccurate.
Good news is email addresses are cheap, and it's unlikely that the bans are based on anything other than the email. Have had problems with PayPal in the past, and had to just make a new account.