Diashonestly and unprofessional behaviour

Nedbak has changed my Home loan debit order date without my consent. Their systems are so poor that they cannot find a single human being who has done so. The question is, how many are they changing daily for ALL nefarious reasons to the detriment of their so called clients? I am angry! Very!!!. I exposed them on Twitter and gave three (03) contact number to contact me and they claim to have called me and left a voice message. I didnt set up voice messages on my phones as i dont have time to listen to voice messages. I SEE NEDBANK DIFFERENTLY NOW and hope all South African will too, one day......