Rental car

Booked rental car 21/02 - 04/03

Credit card on file

Drove total of 800km during rental

Slow puncture found on day 1. So I paid for a new tire. Both front tires were end of life according to tire man.

Car broke down 28/02 (week into rental) as the clutch went. Car towed and wasn’t given a replacement.

Car company now blaming me for clutch and seeking damage. Currently holding my excess of €1800 and will finalise total damage I “owe”

Any thoughts on how I can fight this? (To be obvious, I didn’t destroy the clutch)