Insensitive money making scheme

I tried to book a vehicle online for collection at CT international airport on the 04 May 2020. Just as I booked I realised a few minutes later I made a mistake with booking. Also discovered that due to the lockdown no rentals were open at CT airport. I called in to cancel the booking. The agent did not inform me of the closure of the branch yet I was informed that I will not get a full refund. Bear in mind that this lockdown has affected so many people financially. And only a few minutes later after the online booking did I try to do the cancellation. Avis really needs to look into this no full refund policy because this is exceptional circumstance and I cannot afford to loose over R1000 on a car I never collected or rented. Totally ridiculous and insensitive.