Bad service

I have been a client of Finfix more than two years and every month I have made my payment promptly. I pay even more than what is agreed upon .Every month I get my ipda statement and from creditors. And last month my funds got miss managed. My Standard Bank creditors statement stated that R800 less got paid into their account. It feels that I could have done better by myself. And every month I get questioned repeatedly about where my payment is, after I have constantly suggested that I paid later in the month. It all just falls on deaf ears. Their communication with their clients is zero.