Doseage shorted , any resolution? Advice?

I see alot of people had issues with their prescriptions being underfilled , leaving the last dose short. Mine is 10 units short on 5mg tirez. Wondering if anyone has had a resolution. Mine was on a HSA, thinking about disputing with them. But figured I would see if anyone had advice. This is not cheap to me so to be ripped off is upsetting.