admissions

I app**** at UNISA and i got a student number and paid my admissions fee of R105 on the 17/08/2017. Till today when i log onto the UNISA site it still shows that i have not made the payment or the payment is not yet reflecting. What makes the experience worse is the fact that i cannot even get through to the Admissions contact line ********** 888 (number remains engaged). Its sooooooooooooooo frustrating because there is no contact on their side either. All i want to know is why its taking so long for the payment to reflect and why the status of my application is not being updated