sub standard service

On the 01st August my car insurance premium was debited with an increased amount I was not aware of. I then called and spoke to Nobuzwe Pikoli who advised that an email was sent to me on the 04th June 2018 advised of the premium increase and I am certain that the email did not reach me hence I called. She reiterated that it was the case [and sent to the same email address on your systems] and I requested that the same email be forwarded to me whilst I was still on the line and was told that it was going to take about 30 minutes to an hour to reach me. Be advised that [24 hours later] I still have not received the email. I DO NOT APPRECIATE THIS TYPE OF SERVICE - THE DEBIT ORDER WOULD HAVE RESULTED IN AN RD IF THERE WERE INSUFFICIENT FUNDS IN MY ACCOUNT AND YOU WOULD NOT HAVE APPROVED ANY OF MY CLAIMS DURING THAT PERIOD. CAN I PLEASE BE SEND EVIDENCE OF THE COMMUNICATION SENT TO ME ON THE 04th June 2018 wrt the increased premiums