1) Do not offer a field for free-form "notes" in your store's software at all. (This probably is not an option for a pharmacy, which has a legitimate need to make important medical notations, but it's definitely not a requirement for a restaurant or an airline ticket counter.)
2) Have it, but make it a fireable offense for any employee to put any personal comments in that field. And enforce the policy by having management regularly pull up a few customer files at random; if there's any BS in those entries, immediately terminate the employment of whoever wrote them.
I have zero sympathy for Walgreen's in this case. Pharmacies are medical facilities; if you can't handle dealing with people who have problems (such as those with mental illness), then you should never apply to work in a pharmacy any more than you should apply to be a hospital orderly. And if Walgreen's isn't willing to weed out those ill-suited to working in these positions, well ... in today's world a nice big embarrassing lawsuit is the only way to force them to start tackling the problem.
People who need Prozac, Zoloft, etc., usually aren't walking around in sunshine to begin with. And Lord help the tech that gets hold of one of them coming down from the effects. Or before they fill that first script.
Still, it was obviously humiliating for this woman. They need to revisit their policy of tagging psycho customers.
I'd imagine this lady just wants the perceived defamation to go away for herself and prevent it from happening to others..anyway she can.
I also hope she becomes a kinder and gentler person, for her own sake.
sw
BINGO!