Ulsan Our Hospital

I am a patient with transverse myelitis. Last year, I received treatment at Yonsei Hospital for about four months. This winter, I have been unable to move and have been suffering from pain. I felt that I had to start rehabilitation exercises again. I heard during my visit that since two years have passed, inpatient treatment is no longer possible. So, last year was already over two years ago, how could I have received inpatient treatment then? I wonder if this is correct, and it makes me angry to think they might have admitted me because there were no patients when the hospital opened last year. What should I do?