It is not as simple as a single image in a single room.
It would not be in a single room, but bulk. They would need to replace it in hundreds or maybe thousands of rooms, putting up other art. Then they would need to destroy the hundreds of prints they have, and remove it from the pool of artwork.
It will likely cost several thousand dollars, and they won’t do it without reason. Certainly not just because someone asked.
Looks like you booked a sitting, not prints.
Many studio and professional environments have a cost for shooting and preparing the images, and then the client reviews them. Then they have a second pass where clients choose which images, if any, they want retouched, edited, and printed for large wall prints, or other formats like wallets.
The business model shrank with the transition to digital, and shrank again with photo printing that anyone can access. Even so, the business model is still around.
Nothing criminal about it, just that you were expecting a different type of transaction. Most studios are very clear up front about the model, that prices are for the sitting and not for prints.