TERRIBLE SERVICE FROM CELLC AGAIN AND AGAIN

CELLC IS DOING IT AGAIN, THEY DONT WANT TO SPEAK TO ME, CAUSE THE CONTRACT ON MY NAME, YET WHEN I JOINED I WAS MADE THIRD PARTY, AS I USE THE PHONE,I PAY FOR THE PHONE. THEY DEBITTING MY ACOUNT AGAIN WHEN THEY FEEL LIKE IT, THEY OWE ME OVER R800 IN TERMS OF MESSING UP MY BANK ACCOUNT AND CHARGING ME FROM THEIR SIDE PENALTIES, THEY NEED TO WRITE OFF ALL THESE MONIES AND STOP DEBITTING MY ACCOUNT AGAIN. THEY ONLY NEED TO DEBIT MY ACCOUNT ON THE 10TH OF SEPTEMEBER OF R409.00. HELLO PETER IS THERE ANYONE HIGHER I CAN REPORT THIS MATTER TO AS I AM NOT GETTING ANY JOY HERE