How should I contact a plastic surgery clinic if they aren’t replying to my emails? (Best answer gets MHO)?

They were nice and kept up with responses until I asked if they could fill out a form and be a guarantor so I could go to Japan to get my procedures (this time was when Japan was closed). They said sorry they cannot but I responded with “that’s okay I understand”. Here on after I asked a question and they didn’t respond in a month and then recently since Japan has opened I wanted to finally go. I asked to book an appointment and they haven’t replied in days. Should I fly to Japan and go to the clinic in person? What if I go there and there’s no room for consultation and procedure (fully booked)? Do they think I’m doing something illegal hence why they stopped responding? Should I do the procedures in Korea instead?
How should I contact a plastic surgery clinic if they aren’t replying to my emails? (Best answer gets MHO)?
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