STUPID CAPFIN

I AM SOOOOOO FURIOUS HOW DO YOU SEND A STATEMENT OF R1400 OF WHICH THE PERSON IS OWING AND THEN COME MONTH END YOU DECIDE TO DEBIT A WHOLE R200 EXTRA THEY DEBITED MY ACCOUNT R1600.WHEN CALLED THEIR CALL CENRE THE AGENT COULD NOT HELP ME AND EXPLAIN TO ME WHY THIS AMOUNT WAS TAKEN THAT SHE EVEN HUNG UP AS I WAS STILL BUSY TALKING.THIS IS SO STUPID IVE BEEN SENDING EMAILS THEY NOT COMING BACK TO ME.I WOULDNT LET ANYONE MAKE USE OF THIS STUPID SERVICE THEY ROB PEOPLE FROM THEIR MONEY!!!!!!NOW NOBODY KNOWS WHY THIS R200 WAS TAKEN SO WHAT DO I DO NOW????DO NOT USE CAPFIN.