Security flaw and clueless staff
Transactions that required a PIN and I did not provide the PIN, I cancelled those transactions, still went off successfully. This is a huge security flaw and the customer care staff is as useless as their security they don't even know how discovery bank works I had to keep correcting them. And also for duplicate transactions to go off in a space of 5 minutes and that not being flagged as fraud is also another security flaw.