SARS and Sequestration

If a person is sequestrated, then the person gets a new tax number. How come E-Filing still has the old details of which I had to change it myself to the new tax number. What happens to the old tax returns on the old tax number. How come I get audited every time after sequestration and sometimes I have to pay in even after I over deducted PAYE the one year?
If I submit at the branch will SARS look at the e-filing and say I did not submit?
I have submitted all the documents and how can SARS ask for more docs that I don't have.
I submitted my Tax tax return early and its over 21 days and still no refund

You would need to call 0800 00 7277 as this is a common mistake with SARS and they will be able to guide you and tell you why your refund has not been paid back.

Thanks. Just another question, would a curator of the insolvant estate have anything to do with getting refunds back from SARS?

They may be able to act on behalf of the taxpayer in order to do so if a refund is owing.