PATHETIC BILLING DEPARTMENT AND SERVICE

I keep getting CUT OFF - when I am in CREDIT - I have sat for 5 DAYS WITHOUT DATA ON TWO CONTRACTS - THEY REFUSE TO GIVE ME CREDIT ON THESE 2 CONTRACTS. MNT CHANGED THEIR BILLING DATE TO A DATE THAT I DO NOT GET PAID AND THEY ALSO REFUSE TO CHANGE THIS DATE BACK TO THE 31 OF THE MONTH. THEY ARE USING EVERY EXCUSE UNDER THE SUN AS TO WHY THEY DISCONNECT ME!!!!!!! SERVICE IS PATHETIC - NO. 1 EXCUSE IS I AM IN ARREARS WHEN IN FACT I AM IN CREDIT - NO. 2 EXCUSE - I UP-GRADED -DUH - I KNOW - I AM THE ONE THAT UP-GRADED - NO. 3 MY REFERENCE NO. COULD BE INCORRECT - UN BELIEVEABLE AS I HAVE BEEN USING THE SAME REFERENCE WHICH HAPPENS TO BE THE CELLPHONE NO FOR WELL OVER A DECADE !!!!! NO.4 - MY ONE PAYMENT IS NOT REFLECTING AND THIS IS ONE THAT I UP-GRADED ON SUPPOSEDLY USING THE WRONG REFERENCE NO. I HAVE 21DAYS IN WHICH TO PAY MY BILL WHICH GETS PAID BEFORE THE END OF THE MONTH AND YET THEY WILL CUT ME OFF!!!!! I AM GETTING NO WHERE WITH MTN - I WAS SWITCHED OFF FOR 5 DAYS IN MARCH + 1 IN APRIL AND NOW AGAIN IN APRIL ANOTHER DAY - WHAT ON EARTH IS GOING ON WITH THE BILLING DEPARTMENT - THEY SAY THEY CAN NO CHANGE MY DUE DATE BACK TO 31st OF THE MONTH AS THIS IS FOR PRE-PAID - HOW IS THAT POSSIBLE - PRE-PAID IS PRE-PAID - I HAVE AN ACCOUNT AND I WANT THIS DATE CHANGED BACK TO THE 31st - IF THEY CAN PRO RATA YOU WHEN YOU UP-GRADE OR WHEN THEY FEEL LIKE CHANGING THEIR DATES THEY CAN DAMN WELL PRO-RATA ME MY CREDITS DUE FOR THE THESE DAYS OF NON-SERVICE AND PUT MY DATE BACK TO WHAT IT SHOULD BE - I SICK AND TIRED OF HAVING TO FIX MY OWN ACCOUNT.