Sanlam ***********. Can't correct error made by them on 2 pot withdrawal directive

My partner and I recently requested 2 pot savings withdrawals from Sanlam. The income information provided to SARS was not checked with us first. Incorrect information was thus provided for the tax directive resulting in over taxation. The process as per SARS (2 separate calls) is for Sanlam to CANCEL the incorrect directive and request a new one with correct information. Sanlam refuses to correct the error and insists it is a SARS issue. SARS can't possibly correct information provided by a 3rd party. This has been going on for about 2 months now.