Your CC was taken as a damage egoistic, much like renting a house.
The only question was the value of the items damaged.
They were used items nit new, they had been used, nothing last forever.
The manager may still be using them to wash his vehicle. I have seen used blankets on beds before. Get real.
Request an adjustment and dispute the charge, you should have never admitted guilt.
Even a fish would not get caught if it would keep it's mouth shut.