Hit and Miss..More misses...Restricted internet banking because of expired card

I am out of the country and unable to travel as I wait for my vaccine. Meanwhile my bank card expired and when I tried to raise my online payment limits I get a message that I need a bank card to do this. Obviously I am not going to risk flying anywhere just to pick up a bank card from FNB. I wrote to them in March but nobody answered except I got an automatic reply with a promise to attend to this problem. Now I need my funds for a medical situation and I am stuck with this problem where I cannot make a substantial payment because I cannot raise my payment limit, because my bank card expired! Surely there must be other ways for customers to have full unrestricted use of their internet banking if they are unable to visit a branch. Surely two emails asking for help should have been attended to and not ignored or lost.