I think that their are certain circumstances that either a portion should be returned or not accepted. There are times that a T might need to end session early or if the session is spent talking about Ts issues. Basically if a client is not getting their 50-60 min then they should be reimbursed a portion especially if it happens often. My kids T was creating a habit where she would only see my one child for 30 min and then telling me 10mjnninto my other child's session that she has nothing to address. My thought process was then are you going to charge the insurance for both visits as if you saw them and gave them their time. She ended up seeing my second son for the time needed once I enlightened her and intervened. Otherwise she would've dismissed him. other times she would make a phone call in between which was becoming habitual and then end early on top of that. Now she stopped the phone calls in between and when she ends is still up in the air. She has more than enough material to work with. I think that there are times where things should be questioned.