Terrible Service and unclear instructions

<br> I have had nothing but disgraceful service from SAA!<br> <br> I had 21000 Miles on the 23rd of March of which 14000 were expiring on the 31st March. I then booked a one way ticket from Port Elizabeth to Durban on the 23rd of March, the ticket was for the 5th June.<br> <br> I was required to pay airport taxes and was not given a fixed date on which I had to pay it. I had asked my mum to pay the airport taxes via her credit card in April, this was done an amount of R871 was paid. However on the 7th May I was called from an SAA employee and told I don't have enough voyager miles to fly from Port Elizabeth to Durban. My return flight is already booked and now I apparently don't have a flight to Durban. This voyager miles scheme is **************** and costing me more money, when I'm supposed to be gaining.<br> <br> I called the Voyager office TWICE and spoke to Agnus the first time and Kenneth the second time. Both times I was told I would get called back after already holding on the line for over 20 minutes. I never got my call returned.<br> <br> I have now called two time more and still have got no reply!