How long should it take when an assessment is escalated?

I have submitted my tax return via SARS eFiling on the 2nd July 2015 but I am yet to receive my tax refund. Its been 3 months and additional documents submitted. My assessment was selected for the audit and they requested documents which I gave them. It was later escalated but nothing happened. It is currently escalated again and no feedback. What can a man do?

Have you submitted all tax returns to SARS since you were registered as a taxpayer?

Yes Tim, I have submitted all my tax returns ever since. my affairs are in order and I have asked them telephonically if they need any additional info, and they said everything looks fine.

now what is causing the delay?

You can report this matter to the SSMO by reading the SARS website on   How to complain about SARS