SSAS Cube Only Displays Total Values
The Customer dimension is joined to the measure group at a non-key granularity. If the Customer Name attribute isn't related to the attribute you join on then data repeats in reports. You need to do one of two things:


Recommended. Change the fact table to have the surrogate key of the dimension. Then change the Dimension Usage tab to join to the key of the dimension. 
Change the dimension to change which column is used as the key of the dimension. Make sure the fact table has this column. Fix the Dimension Usage tab to join to the dimension key.