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.
This caller will call and only request to speak to the person they are calling for, Only if the phone is picked up. If the phone is not picked up on, they will call numerous times (8-10 times estimated) all day from 8am through 8pm everyday. And if they hit a message machine and or voice, they do not leave a message.