Interop Excel 2007 library is reading Excel 2003 files as Corrupted in C#

I have written a code to import data from Excel to Datatable as follows

public static DataTable Method(string pFilePath)
        {
            DataTable dt = new DataTable();

            using (SpreadsheetDocument spreadSheetDocument = SpreadsheetDocument.Open(pFilePath, false))
            {

                WorkbookPart workbookPart = spreadSheetDocument.WorkbookPart;
                IEnumerable<Sheet> sheets = spreadSheetDocument.WorkbookPart.Workbook.GetFirstChild<Sheets>().Elements<Sheet>();
                string relationshipId = sheets.First().Id.Value;
                WorksheetPart worksheetPart = (WorksheetPart)spreadSheetDocument.WorkbookPart.GetPartById(relationshipId);
                Worksheet workSheet = worksheetPart.Worksheet;
                SheetData sheetData = workSheet.GetFirstChild<SheetData>();
                IEnumerable<Row> rows = sheetData.Descendants<Row>();

                foreach (Cell cell in rows.ElementAt(0))
                {
                    dt.Columns.Add(GetCellValue(spreadSheetDocument, cell));
                }

                foreach (Row row in rows)
                {
                    DataRow tempRow = dt.NewRow();

                    for (int i = 0; i < row.Descendants<Cell>().Count(); i++)
                    {
                        tempRow[i] = GetCellValue(spreadSheetDocument, row.Descendants<Cell>().ElementAt(i));
                    }

                    dt.Rows.Add(tempRow);
                }

            }
            dt.Rows.RemoveAt(0);
            return dt;
        }
        public static string GetCellValue(SpreadsheetDocument document, Cell cell)
        {
            string value = string.Empty;
            SharedStringTablePart stringTablePart = document.WorkbookPart.SharedStringTablePart;
            if (cell.CellValue != null)
                value = cell.CellValue.InnerXml;

            if (cell.DataType != null && cell.DataType.Value == CellValues.SharedString)
            {
                if (!string.IsNullOrEmpty(value))
                    return stringTablePart.SharedStringTable.ChildElements[Int32.Parse(value)].InnerText;
                else
                    return value;
            }
            else
            {
                return value;
            }
        }

This works fine for 2007 work book but the same code when I tried for 2003 displaying an exception as corrupted data how can I achieve this kind of scenario for 2003 excel file too