Terrible service

I settled my Justine account on 9/7/2018 with a transfer into the Avon Justine account number ********** 348. My account was due on 11/7/2018. My payment is not reflecting on my account. The bank confirmed that my payment is reflecting on the Justine account with the correct reference number. After several calls I was instructed to send an email to Rachelle Armstrong. No feedback from anyone and my account still reflects as overdue. This reflects badly om my credit rating. It has been 7 days and no response from the Justine office.