INCORRECT POOR SERVICE

IT LOOKS LIKE MY ISSUES WITH MTN JUST DOESSNT STOP!! MY DEBIT ORDER WAS SUPPOSE TO RUN ON THE 30/03/2023 AND SINCE MONDAY 3/4/2023 I PHONED MTN AND THEY ASSURED ME THAT THE PAYMENT WAS RECEIVED. THERE WAS A ARREAR AMOUNT WHICH I WASNT AWARE OFF WHICH I THEN MADE AN ARRANGEMENT TO PAY END OF APRIL 2023. EVERY SINGLE DAY I PHONE THEM AND THEY TELL ME MY ACCOUNT IS PAID !!! THE 05/04/2023 I RECEIVED A MESSAGE TO SAY MY DEBIT ORDER WAS RETURNED !! THE MORE I AM TRYING TO SORT THIS MATTER OUT I AM GETTING NO JOY FROM MTN BUT THEY VERY FAST TO SUSPEND A LINE WITH AN ARREAR AMOUNT WHICH I WASNT AWARE OF BECAUSE DEBIT ORDER WAS LOADED FOR THE AMOUNT AGREED NOW ALL MY DEBIT ORDERS WENT OFF AND NOW I AM SITTING WITH JUST ENOUGH TO GET ME THROUGH THE MONTH SO WHERE EXACTLY MUST I GET THIS MONEY FROM AND THEY CANT MAKE AN ARRANGEMENT BECAUSE MY ACCOUNT IS SHOWING I AM UP TO DATE !! I DIDNT AGREE FOR THE DEBIT ORDER TO RUN ON THE 5/4/23 .. I LIVE ACCORDING TO A STRICT BUDGET AND NOW I HAVE NO MONEY AND MY LINE WILL BE TEN TO ONE DISCONNECTED AND I DONT HAVE OVER 2000 TO PAY MTN MONTH END !! ITS JUST AN ONGOING MESS !!! WHICH SEEMS NOT TO BE SORTED OUT !! AND THE STAFF WELL THEY CANT BRIGHTEN MY DAY BECAUSE THEY EVEN SOUND LIKE DEATH ITSELF!! I AM FED UP