Terrible service from FNB

FNB called me to update my banking suit on the 16 Oct, I told the consulted that with my previous update I couldn't make purchases until the new cards were delivered, which was a HUGE inconvenience! he assured me that with this upgrade this would not happen, I'd be able to use my current cards to make purchases until my new cards are delivered. Now my card is showing zero credit and i cant make purchases. From this morning I've been sent from Pillar to post by the consultants both on chats and via call centre. This is so infuriating. I regret taking the upgrade, and I'm starting to regret staying with FNB