I just want to say to those who have complaints about Walgreen's to do something about it. I did, and got results.
Between writing letters, keeping track of people's names, insisting on answers, phone calls, etc., one person can make a difference. I think the culmination of my actions is what got the attention of Walgreen's Corporate, and ever since then, I have had no further problems. They have gone out of their way to make me a happier and no longer frustrated customer. I encourage all of you to write your own letters, to ask the right questions, especially for those of you for which Walgreen's is the only option in your area.
All you need to do is document your complaint, how/why it affected you, who helped/or didn't, and what can be done about it to make you a returning customer. If enough people do this, they will be forced to take a very different approach.
It is not hopeless--you have power as the consumer. I suggest you use it.