Leading Bank, Discovery, 3 x errors stops credit card and not able to resolve

Credit Card "Paused" / stopped due to not responding to an email which was addressed to another person but to my email??? After three phone calls to Discovery's call center and speaking to a "Banker"/ Manager, Peter Ditshego the only response was: "We apologize for our errors (x3) and hear you but we can not do anything about it until our other department is able to sort it out". Their website was also not able to complete the required transaction as it had an error??? Not acceptable from a "leading" South African Bank. The fact that they offer one a Platinum Status also means nothing but "sorry we can not help you now but we hear you".