CVS (and other big brand retail pharmacies) are pretty well known for being very short staffed, and paying under trained employees very poorly to handle your medication. Generally, they suck, but they get your business by brand recognition and being open longer hours. You will have much better service if you can find a local independent pharmacy, as they often have their pharmacists actually on site. Since everything is insurance anyway, the cost of your prescriptions shouldn’t really change, but it is more expensive and less convenient to try shipping while there.