Lerato's bad customer service

This morning I requested a call back from Sars and I was contacted by Lerato at 09:30,yesterday I filled via e-filing so I wanted to know if there is anything I should do or go to the nearest Sars office, because it shows that I should get a portion of my tax, but Lerato just hang up on me in the middle of our conversation and she didn't even bother to call me back. Her service is poor