CVS review: front register check out

Waiting to pay for store purchases, after picking up Rx, I overheard a conversation between the clerk and an elderly Asian customer. The conversation zeroed in on a coupon that expired February 1. The lady acted as though she could not understand why the coupon would not work. The clerk explained: it has expired, but if the system takes it, I will make it good. Well, the $3 coupon apparently cleared. She left happy. I made a remark about my expired coupons have never been cleared, after 24 hours of expiration. He then went into different cultures and the bartering systems, her intentions were not evil, but good. An example would be a person who aimed his gun and the bullet bounced off a rock and hit an unintended target, did that make him bad. I told him I GET IT! The poor clerk; I did not make a light handed remark to be lectured. He became totally unhinged and told me that if I did not see the good in people, then I was not a good person. I will never be comfortable going to that CVS store again, except for prescriptions. Although he emphasized that his training allowed him to see the good intentions of all customers, he may need to be told that lecturing a customer "is off limits."