Intelimali poor service

My sister is a unisa student, she received funds from Intel imali ( unisa), unfortunately she mistakenly block the account. I load R400 airtime just to call intelimali call Centre. When I call them I was no 126 on the line, and they told me waiting time is 66 minutes, instead of their quee online to move its take me back to no 140, and waiting time is increasing, can we get a better service not this nonsense they are doing my airtime is finish for NOTHING