Hello fellow card holder, I'm sorry you are experiencing such headaches. I'm surprised they are still calling you when your account is in good standing. Doesn't sound like them at all, but then again I'm not surprised. Something in their system must not be up-to-date and they should be made very aware of the annoying calls and to make sure the payments are all posted to your account. I hope by now since the date of your posting, the issue has been resolved.
These calls need to stop immediately! So far this number has been calling for about a month, several times day and never leave a message. Now get this, they go under different aliases every other week. The names have been A. Johnson, D. Wasmund & V. Heuther. Do see the pattern? Watch out for these people and never give out personal information. Anyone can claim they are someone over the phone and scam artists do sound professional. Just beware and be safe!
They do not leave a message on my machine either. I get the same thing, different names on different days. Luckily when they call my office I am the only one who works in this office, so I can scan the calls. I know just about EVERY number that should be calling my office, and this is NOT one of them, so they get the voicemail, and I figure that if it is important enough, they will call back and leave a message next time.