ChatGPT provided me another users information

I logged in yesterday and Cgpt started to speak about the files I’d uploaded (PDFs), I had not uploaded anything. I asked it about ‘the files’ I’d apparantly uploaded, but Cgpt said it couldn’t provide information on the files; filename, size, or number of pages. Again, I did not upload ANY files. After I asked it, Cgpt then said the file’s content was html code for a website, and it provided the website’s Url. Again, I hadn’t uploaded anything, but I visited the site Cgpt provided the URL for, it’s a business website. I asked Cgpt to provide the PDFs, it couldn’t, but it provided sections of the code. Can anybody explain what has happened here? Should I contact the website’s owner? -