ABSA card division

I did some payment with my ABSA debit card, on the 14 of April 2021. 2732.75 Rand. Than a Lady phones me, stating that she phones from ABSA? How do I know? She asks me to reveal some personal information to verify, I ask here how do I know that she is really from ABSA, she wasn’t very accommodating. Than she was saying that she will send me a sms to verify. I'm still waiting for that sms. Now she blocked all my card payment, obviously now I know she is from ABSA that is a strange way to verify you’re self. I think it really time to change Banks. Why do you have a 2 way verification process, ABSA did send me a OTP number to verify, so I did. This is absolutely shocking, if I’m not good enough as a “customer”, that’s me, just say so, simple. You have do verify your self first, so I know that I’m speaking to the right person. This is a security risk, the way you doing this. So no star for ABSA card division.