I don't think that just because the customers call HQ and complain means that we give poor service. Perhaps it means we give legal service--we don't commit fraud, we follow the rules. About once every time I work, there is someone with no RX or no refills or who "has to have this medicine to sleep tonight." Our staff does its best, but we can't always meet the needs of everyone. Our DM has made it clear that he does not want to hear from customers, and of course the customers are quick to complain, knowing that CVS will throw money their way.
I know every company has problems. My main complaint was when 3 hard-working pharmacists were denied adequate raises because of their triple S scores--DESPITE the fact that if a customer walks up at 9:58pm (2 mins till closing) with 6 new RXs and is a new customer, the pharmacist stayed until 10:25 getting them all done (that really happened), or that these pharmacists sometimes work 14 hour days to cover each other's vacations, or these pharmacists work at the busiest CVS in our city and fill more scripts than anyone. They work long hours, they deal with customers in a very uppity area of town, they cover shifts at other stores when they are asked to, and they were all insulted.
To give you an example of one customer complaint that went to HQ: a man with a VERY strong accent called in a refill, and the pharmacist couldn't understand the man's name. He asked him to repeat it, and the man refused. The pharmacist told him that he couldn't refill the script unless he knew the man's name. The man hung up on him. 40 mins later corporate calls and wants to know why we refused the man's refill request.