CVS

I went to the pharmacy August 3 to pick up, what I was told an over the counter prescription (K-Phos Neutral). I first was told it was not OTC then was told it is OTC but the 100 pills they had left required a prescription. I tried a couple other pharmacies that did not have them in stock so called the Mayo Clinic to have them call in the prescription, which they did the same day. After waiting a couple hours, I called to see if it was filled. They said they had none. I explained that they just told me a couple hours ago they had 100. I was put on hold and then was told, I could pick up a partial to hold me over a couple days and they would order the rest and can pick them up Monday. I went to pick up the partial and received 24 pills out of the 180. I went back today to pick up the rest but noticed once I got home there was 87. I called the pharmacy and was told that's all they had and then was told that the pharmacist told me that. That never happened. If that were true, why didn't they give me all they had up front. I never was told was told how much this was going to cost and still don't know if I paid for 30 days. I was told after several times asking that I was charged for what they had left, which I don't believe. Express Scripts charge the same $24 that I was charged at CVS except theirs is 90 days, not 30 days. I don't know if they just think people won't question these things or if they just treat people as if their stupid. My RX is 2268687. I just had a kidney transplant and didn't want to have any delays or breaks in my medications as I have to do blood test checking phosphorus levels, among other things. I would like have the remaining balance of my pills which is 45 pills.