ACCOUNTS BAD SERVICE !!!!

LAST WEEK I RECEIVED A LETTER OF DEMAND FROM VERICRED STATING MONIES DUE TO SURESWIPE. 3 YEARS AGO THE SERVICE WAS CANCELLED AND MACHINES WHERE COLLECTED THERE WAS AN AMOUNT DUE BEFORE MACHINES COULD BE COLLECTWD WE PAID AND 2 -3 DAYS LATER THE MACHINES WHERE COLLECTED.ALL THE ABOVE IS ON EMAIL COMMUNICATION WHICH HAS BEEN FORWARDED TO SURESWIPE.,THEY NOW REQUESTING A POD AND SAYING THE MACHINES WHERE NOT RETURNED THIS BEING VERY DIFFICULT AS IT WAS 3 YEARS AGO?? IF THERE WAS ANY AMOUNTS DUE SINCE WHY WHERE WE NEVER BILLED CALLED OR INVOICED . I AM HOPING THIS IS AN ADMIN MISTAKE AND CAN BE RECTIFIED ASAP 3dlinks