Wow. That is one of the most unprofessional behaviors I've ever heard. If I chose to go back, I think I would request reimbursement for my gas and a free session to discuss how being ignored for my entire session made me feel. She'd have to sit there and take it while I ripped her a new one.

Since it sounds like it's her policy to take calls in the middle of sessions, though, I doubt I'd go back. .