They kept insisting asking if we did give it twice a day, are we sure we did the full course, did we respect the 12h interval, etc. The vets told us this (we saw about 6 different vets at the clinic), the person manning the phone berated us, the nurse welcoming us again repeated the same thing.
Eventually I asked to see the test results (the cultures). It was clear that another antibiotic was effective, and that the one they were giving us wasn’t (it was about 25% better than the control). I asked why we couldn’t get the other one, and it turned out it was difficult to get in our country because it was only approved for humans.
We had to get a dispensation from the health ministry to import it from a neighbouring country. It was a mess of a process that took weeks.
Blaming patients is so ingrained that we were being gaslit into giving our pet an ineffective treatment and made to feel like we were doing something wrong all along.