Unhappy

I had a problem with my cards were by on the app there were account that I did not have cards for. In December I app**** for a MasterCard only to find out they would send me an American Express card. I then switched my salary but only to find out that the card I have does not work on all the stores, with the frustration I had I then changed back to the bank I was using however I was not happy because I really wanted to bank with Nedbank. In March I then went to my banking and opened a chat to ask the consultant to assist me with the Master card account that I had opened back in 2018 and also to activate it for me because as I was advised that it was handed over and wanted to pay it. The lady told me that It was activated but on the app it was still blank, I had a chat with different consultant who never understood what I really wanted even though I had explained still no consultants understood what I wanted. I then visited a branch in Flora center Nedbank were I was not assisted because the lady also did not understand my concerns, instead she told me to deposit money in one of the accounts that I did not have cards for saying once I deposit money then the card will be activated. I was very surprised because to get a card you don't have to put money, I then asked one of my friends using Nedbank to transfer R50 in that particular account and it reflect but the card still said inactive. I was very frustrated now because I had closed the account with the bank I was banking with and trying to get the Nedbank query to be sorted but I was taken from pillar to post. Another thing that got me VERY ANGRY is the fact that I was told I owe R600 from the card that was handed over and no debt collection consultant had called me pertaining this, I need answers as to why they waited for this account to pile and meaning if I hadn't called to fix issues I had I would have not known that I owe that much. Even though I have settled the R600 I am no happy I need answers and explanation as to how will this be rectified because I am now going to be banking with Nedbank full time.