Bad service and treatment received at SARS Dube

I registered my query on the online/SARS website as per the instruction I received from the branch in Dube. I received an appointment date of a video call for the 09th of March. The agent I called me after checking what was my query. He said I can go to Dube branch and ask them to assist me as I can't do it from my side. Even the email he sent me with the attachment. I couldn't open the attachment, and he said I must go to the branch and tell them he referred me to the branch and they need to assist me. He said I can ask for the branch manager and ask to be assisted because I can't access the document I require. When I got to the Dube branch. I explained to the security guard as to why I was there and who told me to be at the branch. The security was very rude and I asked to speak to the branch manager and even that he refused to assist me in calling the branch manager. Poor service I received from SARS Dube and the security personnel aren't friendly at all. I mean I got the ref no: *** and confirmed online booking to set an appointment. However the treatment I got wasn't great at all