REA VAYA KE MASEPA

I'm a student and I commute from home to school everyday. On the 14th of January I loaded R150 on my bus card, I started commuting from the 15th to the 17th. Moving forward, yesterday after school when I tapped in (in the F5 bus, in eldorado park) it had said "insufficient funds" and I was surprised.. fast forward, this morning I went to load another R80 and still it had said insufficient funds.. I began to panic, I went back to the guy who was helping me and he just instructed me to go to customer care. This all happened at Thokoza. Can't your workers in all stations be trained for such incidents? Because wow it's draining.