Please understand that we don't have a lot of context and history to go on when trying to give you support and feedback. It would be unethical and ineffective to try to do therapy with an impaired client. Some therapists would fire their clients, but ideally, not before providing appropriate referrals to another therapist or rehab. Other therapists might cancel the appointment and instruct the client to reschedule when the client feels they can attend sober. Depending on the particulars, a therapist might try to help the client get into a detox center or hospital. A therapist might only fire a client if this boundary had been transgressed multiple times as it appears the intoxication problem is a primary need and not much can happen in the context of a standard therapy session. Best of luck and hope you can get the kind of help you need.