Hi Jani,
Use the following code snippets to suppress the 'Summary rows below'.
[C#]
//Suppress the 'Summary rows below '.
sheet.PageSetup.IsSummaryRowBelow=false;
sheet.PageSetup.IsSummaryColumnRight=false;
Here is the sample for your reference:
summary_row.zip
Please take a look at the sample above and let me know if you have any other questions.
Thanks,
Melba