Keep getting cut off after holding on in the queue

I'm trying to buy internet bundles through your USSD service - doesn't work, says I have no airtime available. I use the same service to check airtime balance - says I have over R800 available. <br> <br> Call your call centre - 808 - keeps getting cut off - so I use the IVR service to check my balance - says I have over R800 available. <br> <br> I've probably tried over 15 - 20 times - keeps getting cut off. <br> <br> How can this be the level of service rendered in this day and age. Come on guys - get a grip on it and sort this out.