Chartjs-Chartjs: old data being displayed

I would need to run your example to be sure but maybe the following would help.

Instead of destroying the chart you can add and remove datasets,

• Remove dataset before adding new data

  data.labels = []; //Empty label array
  data.datasets.splice(0, 1);//Removes first dataset
  

• Add new dataset and labels

• Update chart

  pauzeAmountChart.update();
  

I have a working example which retrieves new data from a webapi and updates every 10 seconds, if this isnt sufficient