I agree, over the past couple of weeks I have had a eight to twelve calls from this number some as late at 10PM on a weekend night. They did leave message early on and it was muffled, but I think I made out "Walgreens." I have answered the call and either no one spoke or it sounded like an old-time modem connection.
I've received this call twice now. It was a rep stating they are from Walgreens "Good Start Service". This really someone calling from Pfizer about Lipitor. The phone number was snagged from the $4 co-pay deal I signed up for several months back. Funny this is, my HMO plan just raised the co-pay on Lipitor, thus making the discount card worthless and are forcing me to the cloned version of drug, now that the patent has expired on Lipitor.