Invisible Account, No One to help

My Nedbank Credit card was in arrears, Iam currently paying it off. I have been trying to get information on the account to no avail. I phone Nedbank retail recoveries, and get put to legal card division, No one answers the phone in that dept,, all you get is an answering machine, I leave my contact details and no one ever phones back. Then back to retail recoveries, then they say the account is at Trevor Jaggard attorneys, I phone, they say its not with them either. They give me a number of where the account is, nedbank retail recoveries no again, I phone and the lady says the account shows I owe nothing on the card, I must request a paid up letter. She gives the no of legal card again, I phone, answering machine. this started at 8 the morning and I gave up at 2 in the afternoon, Still none the wiser as to my account balance etc. This is shocking, from one of the bigger banks in the country, no one can give you information on one of there accounts, they cant even tell you who deals with account. It is basically an invisible account, yet still shows on itc. All I want to do is pay the account up and finish it, if there is money still owed.Wake up Nedbank, sort your call centres out