Sars refunt still not payed after 2 months.

My Tax practitioner did my tax return as normal using e-filling, the only difference this year was that I had to change bank details. We changed the details online and before submitting my tax to insure we did not have any issue. Guess what I did, notice non payment so phoned Sars. Only to find out I had to come in for validation, stood in the queue for 6 hours (15 min validation) on the 6th of August 2019. Lady told me it will only take a few days to resolve, it is now the 9th September after numerous complaints etc... still no refund. Even the call centers are at loss and cannot give me information. The Ops managers that were support to contact me also never does. What else can I do???????