QB Issue Resolution:

Edit>delete payment should work from within QB. If you ran the card twice you’ll have to log into your merchant account to reverse one of the charges.

Resolution for Issue 'Somehow a credit card donation for 150.00 that I processed on 9-13-17 got put in twice. I need to delete one. How does this get done?' available: Yes (Solved).
Source: Intuit Community forum.

Somehow a credit card donation for 150.00 that I processed on 9-13-17 got put in twice. I need to delete one. How does this get done?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for card twice
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Error Recovery for card twice [Canada]
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