Airbnb host asking for 6000 baht electricity and water fee

Is this normal? I asked around my local friends about this, and they said its pretty much impossible. We had a 2 bedroom apartment where the AC was running only 5 hrs/day maximum, and we were not there for 6 days out of 40.

To me it seems like she wants to scam us, because this host doesnt have any reviews. We already left the proprety.

Is there anything to do for this matter?