Propel Team,
You can use valueFormatString to format the axis labels and yVaueFormatString to format y-values shown in toolTip and indexLabels according to your requirements. Please refer documentation for more customization options available.
If you are still facing issue, kindly create JSFiddle with sample data and share it with us so that we can look into the code, understand the scenario better and help you resolve.
From what we have observed, sometimes things get delayed mostly when we are not able to reproduce the issue or not able to understand the exact requirements or the solution that we provide may not work properly due to the variation in chart-options being used by you and us.
Having a JSFiddle helps us in figuring out the issue and many a time we can just edit your code to fix the issue right away.
—
Vishwas R
Team CanvasJS