issued a card that is not working

can absa make my card work asap , how can they issue me with a card that does not work , but everything was activated in the branch , i put in petrol at sasol monavoni - card says " transaction not authorized " - I was never been this embarrassed before - I had to call my spouse to come and pay so I can be able to drive my car - I called fica - they said they have done everything by 26 sep - but I still cant use my card