Save multiple charts to same PDF page

I have a requirement to add multiple charts to one PDF page. I tried following.
-> Add multiple charts to same excel worksheet and use
workbook.Save(fileName,Ops) But this saves the chart source data added in the cells
Which I don’t want

Is there any other way I can achieve this?

@prashanthnag,
Can you please share your template file containing charts, the current output and expected file for our analysis.