Bad customer service

I phone SARS on 14 August to request a letter stating that I am a registered tax payer. I requested that this letter be emailed to me. I was informed that they would only be able to sent the letter to the email adress on file, which is no longer valid as this is my previous employers email adress. The consultant told me that I can change the info on efilling and then phone again to request the letter. I changed the info and when I phoned SARS they told me the info only updates in 48 hours and that I shouls go to a branch to get the letter. I went to the Pretoria central branch today, I arrived at 15:05 and they told me that they cannot help me with any enquiry other than the filing of my tax return. I am very disappointed at the service I am recieving fom SARS as I need the letter urgently.