What you see in design view is only a representation or "Placeholder" for the graph.
The easiest thing to do would be to try swapping the row and columns.
Open the chart in design View
Double click the chart, to go into "Edit" mode.
On the new toolbar you will find the icons for "Series in rows" and "Series in Columns".
Toggle these settings and view the chart with both options, and see if this helps.
Otherwise you need to post a simple sample of the database