On this past Thursday, I paid for and picked up tw...

On this past Thursday, I paid for and picked up two medications. After the meds, were dropped off at my car. I realized there was a prescription filled that I did not request nor had I ever taken that medication. When I called the Pharmacy back I was told they didn't have any answers for the mix up because it was from an "outside doctor." I asked that the money I paid for the medication either be applied to my account or refunded to my card. When I checked and saw that the money was not applied to my card. I asked if it had been credited to my account. I was told the money could not be credited to my account because I owed money.
Next day, Friday I arrived to pick up two medications that I had requested refills for on the Thursday. I paid for both medications. When I checked the meds at my car, I only had one of the meds that I ordered. The other medication that I received was one that I had not requested nor did I know that I had a refill available. I kept that medication because I had taken it in the past. I would have requested a refill for it if I had known that I had one available.
This leads me to the problem that I can't understand how any pharmacy could let this happen. The medication that I requested on Thursday for pick up Friday. I did not receive. I was told the request was not in the system. I had originally requested the refill on the phone with the pharmacy representative. Since I could not receive the medication that I ordered. I told the representative that I would request the refill through the automatic phone system. Which meant if everything works out hopefully as it should I will receive my refill request on Tues. 5 days after I requested it. The breakdown is like this I requested the refill originally on Thursday. One day in advance. The Pharmacy is closed on Sat and Sun. New request goes in on Mon. Next day pick up Tuesday. Of course, I am out of my medication. I can't stop feeling guilty like it was my fault. But I followed the guidelines, was I wrong to think that I should receive my meds on time?
I know this was long and complicated. How do you think I feel. If this was CVS or Walgreens someone would be losing their job. I am just hoping there won't be any more problems and I can receive my meds on Tuesday.