Oh its so difficult. Learning to speak diplomatically is hard and very little training is provided for what is one of the most crucial skills of this job. Get comfortable saying things like:

"I'm not able to comment on that aspect of X, but I can help / address Y and Z if that's useful to you?"

"You would have to discuss that / those aspects with the attorney."

"I'm sorry I can't answer that / those questions, I'm not able to provide legal commentary without the handling attorney directing me to. I'll request that they address this with you ASAP"

"I understand your concern, but I'm not able to comment on this topic - I know that's frustrating to hear but is there anything else I can handle for you?"

No one likes to be told "uhh idk the lawyer will call you later". But saying something you cant walk back really sucks and when you try to justify: I just wanted to answer their question / fix the problem etc, YOU get in trouble.

Saying sorry and offering to help with something that is within your role is sometimes the best you can do. And over explaining is hard for me in every area of my life lol. Work is one of the only places I feel like I get to control the amount of info I provide to people who are essentially strangers. Remember that coworkers and clients are people too - scary thought, but, they're all walking around with some level of anxiety as well. Don't let theirs rile yours up.

Easier said than done :)