You indicate the car was sold by Tesla at auction and bought by a 3rd party dealership (not Tesla) who then sold it to you. Therein lies the problem.
It’s been well known for some time that when Tesla sells used vehicles at auction or even directly to a new individual that they remove features such as free unlimited supercharging for the life of the vehicle, free premium internet, FSD, etc. Once Tesla takes a car in as a trade, they are free to add/delete whatever features they want before reselling or auctioning the vehicle. They have been doing this for some time. What is on the Marony sheet is irrelevant to a 3rd party purchase once the used car was sold back to Tesla.
On the other hand, if the original owner of the car had sold it directly to you (that is, the original owner did not “sell” the car back to Tesla or did not sell it to a non-Tesla dealer (such as, but not limited to Carmax, a Mercedes dealer, etc)), Tesla would be precluded from removing features of the car.
It is posted on Tesla’s website somewhere what are the effects of buying a used vehicle that went from Tesla to the original buyer, then back to Tesla before being sold at a later date to you.
I am not defending Tesla and I think such actions hurt the brand name, but it was incumbent upon you to carefully research exactly what features were included on the 3rd party purchase you were making. If the dealership you bought the car from represented that the car has FSD, your gripe is with that dealer and not Tesla (the dealer should know Tesla’s policy with respect to buying vehicles at auction).
The sad fact is, when buying a used Tesla, it is buyer beware. It is very difficult to determine exactly what configuration the car has once the car goes through Tesla’s “hands” and is sold at auction or via a 3rd party dealership.