Welcome to the forum @vindalooq
There is a category here for appealing rejected removal reports in Wayspot Appeals. You will be asked for a screenshot of the email of the rejection of the report.
If you already submitted photos, I assume you used one of the forms listed at the top here and I am not sure what more evidence you could give. The other suggestion Niantic has made is to make a splat:Leveling Up Your Appeals and Removal Reports