Ageism at Capitec Bank

I went to Cape Town branch of Capitec, wanting to open a Global One account. I had my proof of address and bar-coded green ID Book. The receptionist confirmed that these documents were in order. But, when I got to the banking assistant, she took one look at my ID Book and said I was too old. I'm only 57. I asked to speak to a manager. She arrived (I presume a supervisor)