other people have taken possession of my key so I want to delete it or my account in ocr space
Hello, if you have a paid PRO or PRO PDF api key, please contact tech support and we can replace/change the api key.
If this is a free api key, you can simply ignore the issue and sign up for a new free ocr api key 
If you are concerned about your OCR data: No need to worry, as no data is saved on our system. So even if someone has accesss to your api key, there is no way she/he can access previously OCR’ed documents. All data is deleted directly after the image to text conversion process.