Appalling customer service from SARS

I am highly disappointed in SARS customer service it has been over 2 months I have been struggling to get a refund due to me. 3times at the branch submitted banking documents with the promise of refund within 72hours. Banking details verification details keeps on coming through. I have been on numerous calls with consultants who brushes me off with I need to submit banking details documents and wait for 21 days. I have submitted these documents 2 times. Same correspondence email keeps on coming. The last consultant Mary dropped the phone on me after 1h30mns waiting in the phone queue. The branch personnel and the phone consultants simply are unable to help me.