NJH communication

Good morning,
I returned from NJH visit last week. It went well- I had multiple tests done, saw dr. Kasperbauer and Dr. Griffith and had ethambutol added to my regime and finished my 8-day visit after 5 days (was surprised and had to change the plane ticket) And here there is a problem- Dr. K. sent ethambutol prescription to the pharmacy which I picked up- is says take 2 pills 400 mg once a day; on my last day Dr. G. clearly stated he wants me to take 3 pills 400 mg each three times a week. Now I am trying to reach to any of them to decide how I should take it. I did call the Infectious disease unit, left a message there for a nurse, e-mailed Dr. G. - still no answer. Does anyone know the best way to communicate with a nurse or a doctor as what I do does not work. I am frustrated that the communication is so bad. Thank you