Many chicken people use the term cocci as a shortened term for coccidia. Technically, you are correct, but then cocci as you use it is also a shortened term for staphylococci, streptococci, etc.
Maxx, have you taken a fecal smaple to the vet? Looking for worms, coccidia and anything else that might be indicative?
Not all coccidia are susceptable to the same meds, so it is still possible that it is coccidiosis, even though you have been treating with sulmet. It may well be something...
Try calling the state again. They should have called back by now. Let them know that you have birds dying, and need help NOW. And keep calling until you find someone who will listen. You can also go through your county extension agent. Here is a link to the FLorida State Vet...