Disappointing Customer Service

I wrote a review on Monday logging a complaint regarding incorrect debit and lack of customer service I then deleted it hoping that my query would be resolved after numerous emails , chats on facebook messenger and chatbox online . I have email correspondence confirming that the incorrect date for a debit was loaded on my profile and would be rectified ,My account was not debited but now states I'm in arrears which affects my credit health and I got a call from an agent telling me I am in arrears and need to make payment . Is there no notification attached to my file ? I am so angry and disappointed