2005 Chrysler Sebring Coupe

MY 2005 CHRYSLER SEBRING HAS A FAULTY FUEL LEVEL READING. I HAVE HAD THE VEHICLE IN TWO DIFFERENT DEALERSHIPS (THE FIRST ONE DIAGNOSED THE PROBLEM, BUT DID NO SERVICE WORK DUE TO MY LEAVING THE STATE OF MINNESOTA; THE OTHER TWO DEALERSHIPS SUPPOSEDLY DID WORK TO THE VEHICLE) FIRST SERVICING DEALERSHIP CLAIMED TO HAVE REPLACED THE FUEL SENDING UNIT; HOWEVER, THE PROBLEM OF INACCURATE FUEL LEVEL IS STILL SHOWING. (WHAT I MEAN BY INACCURANCE FUEL LEVEL READING IS THAT THE GAUGE WILL SHOW ONE LEVEL, BUT THE AMOUNT OF FUEL PUT IN THE VEHICLE IS SUBSTANTIALLY LESS; MUCH LESS THAN A ONE OR 1.5 GALLON RESERVE WOULD SHOW.) IT IS UNKNOWN IF THE ORIGINAL PART IS AVAILABLE. I HAVE SHOWED THE LAST SERVICING DEALERSHIP PHOTOGRAPHS OF THE FUEL GAUGE AND RECEIPTS FROM FILL UPS; THE LAST SERVICING DEALERSHIP CLAIMS THERE IS NOTHING WRONG. I CAN PRODUCE A SWORN STATEMENT FROM MY WIFE WHICH WILL PROVE MY CASE. *NM