Standard Bank Sandton Branch - Poor Seervice

My son is now living in Europe and want to close his bank account with Standard Bank in Sandton. He sent me an affidavit and copy of his ID and I went to the branch on the 24/02/18. The branch manager found something wrong with the affidavit and scanned the documents. She siad would send them to compliance and would phone me back. Never did so! On the 03/03/2018 I went back to the branch and another lady took care of the subject. Phoned the manager and said they would phone me back. Took copies of the documents again. Today I still do not have any reply whatsoever. I would expect at least a phone call with an update!