I’ve had many dealings with Airbnb customer service. You state you’ve been hung up on—yes they will and should do that when the caller becomes verbally abusive. Was that your situation?

So you want an extension to use a $170 voucher? What is the voucher for? Guest referrals? For each of the past 4 years, I received a superhost $100 travel voucher which is issued as “use it or lose it” in the following 12 months. I can’t get an extension because the voucher has an expiration date so why should you?

Take your trip before your surgery, use your voucher and enjoy Mexico. If this surgery can be postponed, do it, and enjoy your time.

Stop blaming Airbnb because you waited to the last minute and they are enforcing a known expiration date.