Not Allocating Payments

1. I received an sms on 05 January 2016 stating that my account was going to be suspended for non payment.<br> 2. I phoned Netstar the following day using the number provided: *** (no answer). I tried approximately 11 numbers before someone answered their phone.<br> 3. The credit controller listened to my story and phoned me back a couple of time to try and sort out my problem. She found that I had made the payments of over three months and promised me everything had been allocated. I should just add ANF to my future payment references.<br> 4. On the 7th of January I received a new statement via email: Again no payments allocated. <br> I phoned the credit controller back. She again phoned me back and said she had sorted it out.<br> 5. On the 12 January I received a telephone call asking me when I would pay the outstanding amount. I told her I had paid the amount and that she should send me an email so that I could send proof of payment. No mail has come through. <br> This is about the third time this problem has occurred over the past 15 months. The account number is correct. My reference number is correct. How do I get Netstar to allocate my payments?