Disgusting FNB summarily put a hold on my account.

On Sat 10 July '21 I discovered that fnb has summarily put a hold on my account without any warning or communication with me whatsoever. This caused me huge financial loss on a deal, not to mention not being able to pay for my mother's chronic medication and other payments that were due. This is absolutely disgusting and without any regard for customer service and human decency. I'm flabbergasted by fnb action. I've had this account for more than 16yrs and they treat me like trash.