"Almost every time with several different pharmacies, they mix up milligrams with micrograms. I have to check EVERY TIME"

My experience is that many inhaled medications are dispensed as micrograms, but pills, capsules and liquids usually are measured in milligrams. As these are premade, I think there is little chance of a mix up in that respect. Do the chemists or pharmacies you go to do their own compounding? That's truly rare these days in Southern California, but I would think that's the only way for such an error.