Pet Fee Separate Invoice Problem

Dear All,

Quick question here: I'm dealing with a difficult host at present over pet fees. We have one pet with us for a longer stay (1.75 months), and have paid $7500 for this already. My host made it clear on their house rules that pet fees would be a certain amount per day, which I was fine with. So I paid the total to Airbnb (which said it was a "total breakdown"), but now the host is asking for hundreds of dollars in pet fees 45 days into the stay.

Airbnb's website right now says that pet fees are included in total breakdowns, yet support was less sure about this. The host did not make it clear in their house rules, meanwhile, that the fee would be sent via a separate invoice. So, I presumed it was rolled in as part of Airbnb's total (I know that that's an option these days).

Anybody have any experience with this? Host is being very insistent.