You need to speak with an experienced DUI lawyer.
It is possible to find out down to the milliliter how much if s breath sample you provided.
This, along with other information that the lawyer can help you gather may be the difference.
MVA penalty for refusal is either 120 day straight suspension or interlock for a year.
You will not need to go back through the MVA testing process once the suspension is completed.
The MVA Hearing and court case are completely separate