Penn Interview dilemma - please help!

I applied to University of Pennsylvania regular decision and got an email just over a week ago from an alumni who wanted to schedule a Facetime interview. I responded to his email saying that I was looking forward to the interview and was free any time up to Friday the 23rd (because I am having surgery to get my wisdom teeth removed Friday morning and was planning to spend the whole weekend sleeping it off). He took several days to respond to my email and is suddenly telling me that Friday (the 23rd) (which is now tomorrow) is the only day he is available to interview me before the deadline and wants me to do the interview in the afternoon. Throughout this process, his emails have been getting progressively ruder. Is it better to tell him I don’t want an interview at all or to accept the interview even though I will be swollen, sore, and possibly still under the effects of the anesthesia from getting my wisdom teeth out?

Neither.

You respond reiterating that you are unavailable on the 23rd and express your disappointment that you would be unable to connect.

You can also send a follow-up email to Admissions letting them know that you were unable to set a time to connect with the interviewer due to prior commitments that could not be rescheduled.