Unable to pay credit card arrears or update address. Worse service

Worse bank ever. I took a credit with Nedbank last year. I went out of the country for 2 months and went into arrears, I came back March tried to make payment payment at the atm , but card was rejected.Ever since all my effort to make payment has been abortive. Each time i go into the branch, i get pushed to the customer care online after waiting in a long queue, calling customer again is another night mare , eventually after picking , the customer care always send me back to the branch to make paymen***** very frustrating that no one is willing to help despite my effort to pay you back your money. I bank with other bank , but never experience this nonsense .Today I called customer care to update my address, they referred me to the branch, I went into the branch and waited patiently to resolve these whole issue. After waiting for about 45 mins before being called, the cashier told me i have been put on the wrong queue and would have to be put back on the queue. I voiced out my frustration and all she said was "write down your ID and address I will update later". My question is if you can do it why not do it. Most time i skip my launch to rush to the back, but frustrating i never get helped on way to pay. I was once advised to add the credit card account on the App and make payment via the App, but couldn't work either as the App complains its invalid . This mess has eventually put me in more arrears with bad rating.