All a waste of time....for a benefit

It's really sad that I am trying to settle and close off my credit card. Last week I went to the bank on Sunday and wanted to know how much I need to settle for my credit card and make a payment immediately. I was given a work phone to call that department and ask for the settlement letter. I spoke to a nice lady and she said , she will need to request for settlement letter as the department is closed, I asked the letter to include the amount and the bank details which she agreed, also recapped every thing before wrap up, then was also given the ref number should I not receive the letter and the number to call back should it not be sent. Long story short : I received an email Monday with my settlement amount , no Banking details provided at all. I then called in today 17th January 2024 , explaining line got cut off , called again and got to the consultant named Noluthando, she adv on the amount and given me the Acc number to send the money and to use my long card number as a beneficiary , I then go to my app to make a payment ,bit says invalid Acc number, I then called in immediately Again , spoke to Dineo which I again explained everything once again from the beginning, she then adv that I need to go to the till at the branch to make a payment, I then explained that I'm at work and I can only go there weekend, of which I still need to call again ask for the settlement amount of which it would have incurred interest as it does that daily. Somthing that I am trying to avoid as well. I was then transferred to another department called creditors Somthing which I spoke to a lady that have me the Acc number and adv to use my long card number again only this time without changing the last three numbers to 000 as a ref. I come back home tried and it says invalid. Now Iv wasted 150 on airtime for nothing, my time for nothing , with an unresolved issues , I have gotten nowhere at all with this, yet I get surveys to rate an appuling services from FNB. I need to pay my credit card and I need to do it soon , I can't afford to go to the branch where I will be told that I can't be assisted beacuse the department is not there and stuff, I'm not happy at all. Can this be looked into as I can not also afford to pay any high unesecary daily intrested, I believe this could've been avoided if I was lead to the right direction is this the bank or or the staff???. Can this be looked into ??