Sounds like maybe its time to see another p'doc. He sounds like a drop kick.
In Australia Cymbalta comes in boxes of 30 at 60mg. You can get the 30 at 30mg too. My p'doc would never give me a differing med unless we had discussed it.

As to changes in drugs sometimes my p'doc will ask me to look into it as my body is very intolerant to any form of acid. It is in so many medications. I would rather do that than get sick. Sometimes I wish my pharmacist wasn't so on the ball as he is often telling me what I cant have as in pain killer because they will interact. But i spose better that than having something that will interact.

My p'doc also does therapy so my visits are often 60 mins. He does run late but he never cuts any-one short.