Credit Card Collections

This complaint is with regards to the FNB Card Collections Dept. I have been trying to get through to them since the beginning of July. No matter what time you phone they are busy and if you leave your name and number no one calls back. All I want to do is move my credit card onto the credit card assist plan and pay it off. I have now accumulated more interest due to this delay. I have trails of emails where my private banker has also tried to help but cannot.