They can't fill it because it IS the same dose. Had the Dr. increased the mgs., they would have filled it. I hope you didn't run out of your 1st prescription. You need to be clear with whoever you talk with, have them call you back and confirm the script before they send it next time. I understand you're being concerned. You needen't be. Tell the Dr. at next appt. what happened, and bring the script with you, if you have it. That way he knows you didn't do anything illegal with it. {You just need to use a different pharmacy with no insurance}. Just always do the right thing. I got caught Dr. hopping once, that was the scarriest thing. Plus I ran out of meds., long story. Hope I helped you...DonnaH