@Amanda2174
I am afraid you have learnt the heard way what Airbnb customer services has deteriorated into. This tactic of assigning you an 'ambassador' or case manager as they used to be called who just so happens to be out of the office for the next few days, is exactly that. A tactic. Likewise, the rep/BOT who keeps urging you to close the case despite the fact that's not been resolved, or often no one has even attempted to answer your question, is common. I could copy and paste countless similar responses I have gotten in my interactions with CS during recent years.
There was a longer build up to this mess, but things got a lot worse when the pandemic hit and most of the experienced, trained CS staff were laid off and replaced with poorly trained, poorly paid, outsourced staff that have no authority to do ANYTHING, just a check sheet that tells them to say this ridiculous stuff to try to get rid of you as quickly as possible. Like you said, they hope you will give up in frustration.
This article will maybe help to explain why it is so bad: https://www.propublica.org/article/meet-the-customer-service-reps-for-disney-and-airbnb-who-have-to-...
And the powers that be at Airbnb are 100% aware of the problem this has created, believe me. I know this for a fact and, if I stated the reasons why I know it for a fact, I would probably be banned from this forum within 24 hours.