Standard bank is a biggest ****

On the 2nd of August 2023 I got an sms that I changed my banking cellphone number to a number that I don’t even know and I immediately called ***** department and yes the number was changed on their systems. My question was how did it change? And who changed it because I never called and I never went to a branch to change anything. Never got an answer to both my questions. On the 3rd of August I visited Lebowakgomo branch to get clarity of what is happening and the agent that assisted me told me that the number was changed at a branch and I asked which branch and she was like there are no notes so she can’t confirm which branch it is. Then we called ***** department and they said they can’t open a ***** case as there were no loss yet on my account. I was like but how can they not be a case if someone went inside a bank and changed the cellphone number? And because every time you get to a bank they want your finger print, how did the person get mine? I still didn’t get an answer. I got to the branch t 11 and I left there around 3 with all those questions not being answered. Being taken from one agent to another until they referred me to their team leader (manager) Innocentia who gave me an attitude simply because she couldn’t answer my questions. She then took my ID copy and my cellphone number and promised to call me back on the 4th of August till date I have not received any communication from anyone. My bank card was canceled and they said they’ve ordered another one which will come after 5 to 7 days however nothing is here yet. I can’t do anything to get money as all the self services are deactivated. Yesterday I called the agent who gave me her number Tonia and I explain who I am and asked if she would transfer me to her team leader however they hanged up on me.