They phone, say nothing then hang up or get the answering machine and leave no msg.  I phoned them back to discover their answering machine states: "You have reached the Ntional Diabetic Supply please call the contact number your representative supplied  to you. Thank you" !!!!   I'm SICK of these people phoning from all over the US!!!!!  They can be rude and continue to call even after telling them we're on the DO NOT CALL LIST--which is a joke!!!!!  These people who call continuously sell our numbers plus when I phone them back to tell them to stop phoning here..I get a msg. stating the number is no longer in service!!!!  Go figure.  They have it set up right don't they?  Their disgusgting!!!