This drive thru pharmacy needs a lesson in customer delight.
1) They are slow
2) often incorrect and have to re-do
3) They really don't understand the lifetime value of happy cutover
4) their voice calling system - doesn't leave name of person the prescription is ready for, so you are left guessing
This manager should start to take time at learning "window lessons" from the other drive thurs (dunkin donut, macdonalds etc) and train their people on make customers feel wanted.