2 DIFERENT STORIES TOLD

THE STORIES OF 2 DIFFERENT PHONE CALLS , THEY STATE THAT PAYMENT FOR OCTOBER DOES NOT SHOW I HAVE PROOF THAT IT WAS PAID , I HAVE CHANGED FROM BANK ACCOUNT AND THEY DEBITED THE WRONG ACCOUNT , IS WAS RECTIFIED WHEN I CALLED IN ON 22 NOVEMBER,USELY THE DEBIT ORDER GOES OOF EVERY 15 OF EASH MONTH ,15TH BUT INSTEAD OF 15 ,IT WAS PAID ON 22 NOVEMBER , FIRST I WAS TOLD THAT A PAYMENT WAS;NT MADE IN SEPTEMBER 2020 ,NOW I AM IN ARREARS ,SOMETHING JUST DONT ADD UP .