Honestly? People who are interested in having an entity companion should do their research, talk to people who already have them, ask the store they’re looking at questions, browse through old posts, and work on their abilities to sense spirits so they won’t be entirely guessing when their companions do arrive.
But conjurors have a responsibility too. Especially if you custom conjure or reverse adopt an entity for someone and they don’t click with the human, you can’t just throw your hands up and tell them they should just work it out on their own or unbind if they don’t like it. You can’t just be like: I’ve already taken your money so your problems aren’t mine anymore. Even if the listing was a prebound, new companions sometimes make mistakes and everyone can make impulsive purchases on occasion. You can’t just not care about either of the two people you put together because you’ve already fulfilled what you’ve been paid for. Conjuring shouldn’t be the same as any other business.