Sars auditors not liable for their mistake

I submitted my efiling last year and was selected for audit on which was asked for documents which i uploaded.With that i included my employer retirement annuity which knowing today wasn't supposed to be included.The auditord didnt pick it up only now i have to pay for their mistake.SARS should have known it was not supposed to be there.How is it my fault when i was audited and no one picked it up.This is unfair to me and the auditor should be the 1 correcting this mistake not on my side.