With "Privilege" term, you do not give anywhere enough information to determine if there is a privilege or not.

An attorney has an ethical duty to protect client confidentiality. if he were not prevented from telling you does not mean he must tell you anything.

the only way you are going to *make* a person tell you something is through a court order. File suit, start discovery, try to discover, meet and confer about the refusal, make a motion to compel and then win the motion to compel.