Airbnb Washed hands of problems San Francisco California

My family and I had booked a trip to Rome Italy.  We used airbnb to find a place to stay. The host was unresponsive to any communication.  I had notified airbnb of that and nothing was done. The day before we were to fly out to Rome I still hadn't received any communication from host on how to check in.   I called airbnb at 6 am to discuss. 

They did they would escalate my case since I was traveling the following day.    At 1:30 I called them back since I still hadn't received a call.   At this time j was told they would try to contact host but would have to.give him 12 hours to respond.  They also suggested I loom at other options in case they couldn't reach host.   

At 12 am I finally was able to contact the host on the phone with someone who spoke Italian. The host said he no longer is hosting the house.  I then called airbnb and they offered me my money back and a 30% voucher to rebook somewhere else. This amount didn't even come close to the cost of the few remaining properties in Central Rome. 

Instead j bad to book 4 hotel rooms that cost an additional $5000 compared to what I was paying airbnb.  They told me there is nothing they can do.  I also found out the host had double booked it on another site at a higher price.