Little help with reports

I am trying to make a report to see all my clients and how much did they spent…

so:

{REPORT ENTITY DETAILS:E.Name:(ET=Customers)}
>>Clientes: {REPORT ENTITY DETAILS:E.Name.Count:(ET=Customers)}

[Clientes:3, 2]
>Cliente|Total
{REPORT ORDER DETAILS:EN.Customers,O.ExactTotal.Sum.Desc:(ODI=True) && (TCET=Customers):{0}|${1}}
>Total Clientes {REPORT ORDER DETAILS:EN.Customers.Count}|{REPORT ORDER DETAILS:O.ExactTotal.sum:(ODI=True)}

The first part lists all my customers in DB, 728…
The second part shows how much spend each one…
and suprissingly I have 2375 customers…

So… I am sure I am doing somethign really wrong… bu cannot seem to find how to correct it…

Thanks!!!

G.