Personal details given to anyone.

Good Morning On the 1 October 2022 a payment was made into my bank account stating salary. Like any other person who is waiting for there salary you would assume that it is your money. I used the money like any person would do. On the 5 October I received a call from Capitec Bank saying that money was paid into my account and the person want it back . Standard Bank contacted them. The lady who is working for Capitec ask if she could give my details to Standard Bank. She was persistent that they needed to speak to me. I agreed that Standard Bank could call me. A lady called on the 6 October 2022 from a cell phone number this is what she said....."Why did you use my money I want my money back now. I ask her who she was and she told me and also ask where she got my number from she said Your Bank gave it to me to contact you. I was so shocked that Capitec Bank could just give out your details like that. What about the popi act... My niece of 9 yrs old is using my number for whatsapp and is currently on holiday this lady send my niece a WhatsApp message giving account details. I'm deeply disappointed in the bank giving out information to people that person invaded my personal life. She didn't tell from where she's calling me from she was so rude I was shocked. When I paid my rent money in a wrong account Capitec Bank told me there is nothing they could do with regards to my situation they told me to contact the person when I ask them to give me information they told me they not allowed to do so. Capitec Bank and Standard Bank is telling me that it is right and they can give our numbers to anyone and there customers should be fine with it. Capitec Bank and Standard bank can now exploit the customers as they pleases. We could've sorted this out in a more professional manner. I'm very upset and is at a point where I want to take this manner further legally and close my account with both Capitec Bank and Standard bank. Invading my privacy is disrespectful.