I see that the Call-only Ads in this AdGroup do not have any impressions for the DateRange specified. When the
includeZeroImpressions header is set to false or is unset, rows with zero impressions are excluded form the report. Could you retry the report request by setting the includeZeroImpressions header to true and check if you are able to get Call-only Ads in the report as well? I would also suggest that you include the Id and Cost fields in the report definition to get the AdId and the Cost respectively.