Ackermans Accounting department useless!!!

Iam paying my account every month without any delay. I received my statement for June and paid an amount of R460.00 because iam not getting my full salary at this stage. The amount due was R775.00. I received an email from their accounts department that my account is 2 months overdue, but I paid the miniumum amount every month since my account was opened!! How can I be 2 months in arrears if my statement for June showed overdue amount R0.00 Payment due R775.00 and I paiod R460.00 then my account must be overdue for this month only R315.00??? they day I owe them R1089.00 and that they have listed my on ITC!! this is not correct as my account is not arears!!!!