BAD SEVICE FROM NEDBANK

i sent a card dispute form on the 13th June I received an email from Margaret Mzila on 20th July stating that I would receive the refund within 24 hours It is now 1st August and no refund !!!! I have tried to contact her on numerous occasions with out success I was given her direct number today and tried many times, but she did not pick up. I then called back the call centre and the lady said she would give Margaret a message to call She has not called Really disgusting service