Where is the data that I have paid for

On the 22nd April I topped up with 15GB, I received the invoice of R126.00, paid R126.00 and emailed proof of payment. I received both email and SMS confirmation that my account had been topped up and yet it took over two hours for the data to actually be allocated. On the 23rd April I again topped up with 15GB, I received the invoice of R126.00, paid R126.00 and again received both email and SMS confirmation that my account had been topped up and yet it it this time the next day and the data has still not been allocated. When I emailed suppor*****ernet.co.za. first I received a response stating that the data had been allocated and then I received a response stating that the data had not been allocated due to there being an outstanding amount of R1(?). Despite my having paid exactly what I had been invoiced I in good faith paid the R1 and emailed proof thereof and yet hours later I still don't have the data I have paid for.