CVS

I have started using a newer medication called vyvanse and the first time my doctor gave me a 3 month prescription. When I went to fill the 3rd month, I was told it had expired. The script only runs for 60 days and if you aren't aware of this, that 3rd month becomes unavailable. I was not told of this, yet have been a loyal and regular customer of cvs for 10+years. I had to call my doc and she had to re-write a new script for that last month, and because it is a "controlled" substance, I had to drive all the way to her office (which isn't close and disrupted my work day.
Now, for this last script I was written, my doctor made sure to write on each of the three paper prescriptions the date to be filled so that there would be no expiration issues. I took it in the day before it was to be filled and explained how important it was to be filled the next day. I stressed the fact that the last time I tried to have it filled, I had to go through a huge hassle because of the dates, etc. She mentioned that they looked to be very busy the next day and didn't want to give me a time that was too early for pick-up. I mentioned that it was o.K. Because I had to work the next day, so it wasn't a big deal. So it was filled on the appropriate day-I never got a text telling me it was ready to be picked up, by the way, and I constantly am getting texts telling me that things are ready to be picked up, or need to be refilled. I went to pick up the prescription today and the pharmacist told me he couldn't give it to me because it was expired! I nearly had a breakdown. This medicine has become extremely helpful to me in my older age, finally figuring out my adult add issues, and starting a new, very demanding job. I felt that I didn't need the medication on the weekend and didn't think twice about it. Now I feel that i'm being punished for not needing/taking what is known to be an extremely addictive drug for a couple days.
Are these pharmacists here for the customers or not? Why, after explaining about my last experience with this drug, and being so adamant that it was filled on the correct day, would she not have mentioned the importance of picking it up on that day? The pharmacists' answer is that this isn't something they would tell a customer. I can't believe, after being a known customer for so many years, and starting a new drug, that they are not trained to do so. I am extremely upset and want this rectified! There must be someone that can override this decision.
I need some kind of response.
Anna gaborsky