Homeloans Department no joy still waiting

I have made contract with standard bank home loans mid January 2019 submitted all the relivant information . Standard Bank intern sent an imcompatent valuator to my property named Hilton which valuated my property as low as the municipality valuation which a blind man can valuate more value, This I have disputed and since Jan todate Iam unable to get feedback, I could have switch my bond by now. Iam about to loose on a deal that is closing 13 Feb as a result of this. People I spoke to , last Shan no help, Mphumi, let me holding for hours no response, Thembeka at verification does not get back to me, What the hell must I do to get service....