Facing issue with excel output from the standard report --Customer Statement Generation Report.

We are facing extra columns and spacing issue with that template, Basically it is a standard report based on our requirement we customized that report.
While checking the report output from the customized path we are getting extra spacing and extra columns in the report output. We have enabled the option Keep values in same column as 'True' from the template properties. After that also we are getting extra spaces between the columns.
We tried to adjust the RTF header then also we are getting the same issue, so for this issue we have uploaded the support document and Output file.