The CentraCom rates was setup as per rate sheet provided by yourself.
If you have any queries you need to show specific examples and verify them against your rate sheet.
You can also do a Test Cost Calculation to see if the result matches that of the report you are querying. Use exactly the same call details from the TNG report when doing the Test Cost Calculation (date-time, number, duration, etc.) - see forum post:
How do I do a Call Cost Calculation in TNG?If the Test Cost Calculation and the report values does not match, load the rates again to ensure the files was not damaged/corrupted, etc. - see forum post:
Where do I find CentraCom ratebook?If you re-load the rates you can do a re-cost calls to update historic data - refer to forum post:
How do I recost calls in TNG?