UNRESOLVED ACCOUNT

Please could a competent account person resolve my account query. They keep phoning and threatening me that i have not paid ,but they have not credited my account with the last 4 payments .All proof of payments were sent to there legal department last week *** .i phoned them and they have acknowledged receipt of paper work .I would like all the interest reversed .oNCE THIS IS DONE I WOULD PLEASE LIKE AN UPDATED ACCURATE STATEMENT