Wal-Mart, I hate you

I went and dropped off a prescription today at a Wal-Mart pharmacy. The lady at the drop-off counter told me the wait would be an hour. I waited, for the whole hour, only to come to the pick-up desk and be told my medication wasn't in stock, but they'd be glad to order me some and have it in by next week.

The out-of-stock thing I didn't care about, but God, I'm in serious pain right now because my medication is for abdominal migraines. Couldn't they have at least paged me to let me know, instead of making me wait the whole hour before saying they were out?