They blocked my credit card while I was on a business trip due to a "suspicious transaction" which was actually a R70 payment to a business I regularly transact with

They blocked my credit card while I was on a business trip due to a "suspicious transaction" which was actually a R70 payment to a business I regularly transact with. No option to validate the transaction as per usual. Upon phoning the bank they proceeded to demand an endless list of security questions to which I eventually could not reply seeing as I was away from home and did not have all my documents. This left me stranded without a working card. I demanded escalation and they promised to get the manager to phone back, but they did not. Standard Bank has become the absolute worst bank.