Medco's customer service is horrible. No one knows what they are talking about.
You call three times and you get 3 different answers and explanations as to why things went wrong. They tell you that you will get your order withing 5-7 days. Don't believe them. Try 3 weeks and still counting.
It takes at least 2 weeks for them to register your meds, only then the shipping process begins.
If you are planning to use this service, be prepared to pay out of pocket and get the run around. It is much easier to stand in line at the pharmacy!