So sorry to learn of this Retro.
We hear this sort of thing all the time these days. It must have been very frustrating for you, and you have my every sympathy. Whenever I have to attend Hospital for any reason, I have to be dragged kicking and screaming, and what happened to you would have made me even more ill. Its an atrocious way to a Hospital to behave. Have they given you another slot yet ?
As the real reason that your Op was cocked up, I would have thought you have a good reason to make an official complaint, especially as it seems that you were lied to.
Take it easy !