I always put things in writing now with situations like you are describing. I word my questions very respectfully and always put c:c file/legal/medical at the at the end. EG Dear Dr. Smith, re: your patient my husband Tom Jones.... and so forth.. I always end by thanking the Doctor for his care and expertise. I then have a paper trail and it helps me care for my husband who is palliatively ill. In your case l would probably give the office one more call and say you realize the doctor is very busy but you are concerned for your husband etc. and thankful for his response etc. It never seems to fail. As people have also wisely suggested get a copy of the procedure notes and recommendations, they are a good source of clear info and you may find that the recommendations to see a GI or other advisements have come from the expert who wrote the conclusive notes based on the results of the procedure. Keep calm and respectful and don't give up. Take care.