ABSA's poor telephone practices

Absa has unacceptable cold calling practices. I received a cold call from Absa this morning from a lady claiming she had to discuss changes to my mortgage account with me and also get my decision. I told her that I did not want to be advised of any changes telephonically and that I wanted the information in writing so that I would be able to think about it and discuss it with my husband. She refused to do this and said that ABSA is only doing the changes telephonically! I asked her what the changes were related to and she said she was unable to reveal this until she had done a verification. I refused to do a verification as I had no cer*****y that she was who she said she was. I believe that this is extremely poor practice on ABSA's behalf.