PAYMENT WAS MADE AND NOT CREDITED

I am writing this complaint because I do not know what to do anymore. I am a representative for Avon for years know. I started to sell Justine about April 2015. I made a mistake with my payment on 1 July 2015 with the reference nr. I have send proof of payment to credit control. The acknowledge payment as well. After a while I saw my payment is not reflecting. I contacted Justine and send proof of payment again. After months I still battle to get my account credited from Justine. I was handed over all ready and they keep on sending sms's and my account is in arrears. I am definitely sure I am a slow payer on my credit record. I have phoned, emailed and send proof of payment about 7 times all ready. Up to today my account is still not credited. I want to report it to the newspapers as well. I send my bank transfer payment with my name and my email address to them. I do not know what to do anymore for them to credit my account..... Please help!!!!