SARS staff are rude and unhelpful

I requested a call back. the agent was so rude and aggressive with me, and even though I asked why I must supply documents they already have on file, he told me that I'd "better do it or else"as the documents my bank automatically submits (IRP5's) belong to SARS and I cant use them. I now have to submit these exact documents in less than 24 hours or lose my appointment end October at the branch. Mind you, I had to wait in a queue of over 580 people on the phone, to make this appointment and request more information. I see why people do not respect SARS.