What is wrong with this letter?!!

I have sent this letter or a letter similar to 3 osteopathic physicians in the past 3 weeks trying to get a shadowing experience. Maybe there is something wrong with it because none of them will get back to me. I called the office of one of them 2 times and they said that the doctor was aware of my letter... but they still havent contacted me. It would be nice if they would at least have their secretary tell me that they are too busy. Can anyone tell me if there is something wrong with the letter? Im frustrated

this one was to an oncologist:

My name is X and I am a 2005 X graduate. Currently, I am doing research on X at the University of X and have developed a special interest in oncology. I am writing you this letter because of my concurrent interest in osteopathic medicine. This summer I began the medical school application process and initially applied to only allopathic schools. In the process of applying I was introduced to osteopathy. Since then I have done a great deal of research into osteopathic medicine and it has become very appealing to me. I have already submitted applications and reference letters to X University, Y University, and Z University. I am interviewing at X University in December. Unfortunately, I have not yet had the opportunity to shadow an osteopathic physician in practice. Undoubtedly, you are very busy in your practice but I was hoping that there may be a time in which you would allow me to watch you in your daily routine and give me some insight into the osteopathic profession. I know that cancer is a very emotional diagnosis for your patients, so if you feel that this would be inappropriate please let me know. Otherwise, I would be extremely grateful if we could discuss this further. You may contact me by phone or email as your schedule permits:

email:
phone:

Thank you for your time.

 

thanks for the responses, the first two were just private practice internists and the last one i sent the letter to was an oncologist. I just thought it would be cool to shadow an oncologist because he/she could give me better insight into specializing and what not.

Anyway, i just got the name of an internist at my state university from a friend who said he helped her out. Hopefully he gets back to me,! My interview is in 2 weeks and I would like to have shadowed someone