I did not see your image but think my test data is roughly what you have.
Pivot tables are great for summarising. To create one that I suspect will do what you need:
-Click Insert
-Pivot table
-Select your data table (if you have it named use the range name)
-Choose between a cell away from data in existing sheet or new sheet
-Click OK
-From the field list, drag customer to the Report Filter area
-Drag Customer onto the rown lable area
-Drag end balance to the Value area
-Check that the Label in the value area starts with 'Sum of...'
If not, click that field; click Value Field Setting; choose Sum; click OK
** Missed a step below, while you have the Value Field Setting open, Change the format to currency.
-Now on the pivot table created on your sheet, use the dropdown to change Status to success.
** Also in Pivot table, you can change 'Row Labels' to Customers and 'Sum of End Balance' to something else if you wish
NOTES
Pivot tables do not referesh automatically when you change data
Pivot tables do not automatically resize to fit data when you add more redords
My test data
Time | Customer | Status | End Balance |
12:55:46 AM | D | Fail | $226.00 |
1:21:21 AM | B | Fail | $184.00 |
1:31:40 AM | A | Success | $170.00 |
3:15:41 AM | D | Success | $188.00 |
7:42:55 AM | A | Success | $226.00 |
9:22:03 AM | A | Success | $236.00 |
12:10:56 PM | D | Success | $203.00 |
12:51:37 PM | B | Success | $255.00 |
2:25:38 PM | E | Success | $150.00 |
3:46:10 PM | D | Success | $275.00 |
6:15:20 PM | C | Success | $232.00 |
8:20:46 PM | C | Fail | $162.00 |
9:34:38 PM | D | Success | $295.00 |
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(Customers were A,B,C...)
My result
(Success is a drop-down selection)
Status | Success |
| |
Row Labels | Sum of End Balance |
A | 632 |
B | 255 |
C | 232 |
D | 961 |
E | 150 |
Grand Total | 2230 |
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