Hertz — Charging a cancellation fee

I booked a car through Hertz for the Labor Day weekend 2020. Due to the Covid concerns the venue cancelled the event, so i cancelled my car reservation. That's when i discovered that hertz was charging me a $100 cancellation fee. thats 25% of the entire $400 rental cost!!! After many attempts over 3 days to reach someone at customer service i was finally able to speak to someone. I read them the section OFF OF THEIR OWN WEBSITE that clearly states there would be no cancellation fees. The customer service op said i should take it up with corporate by sending proof (off of their website!) Even after insisting on speaking to a supervisor (who actually told me there was "no one above her" ) I was continually told the fee would stand. Next step calling my bank to have them dispute the charges. Shame on Hertz for pulling this during this time!