Pendrive problems

Does anyone know of any way to retrieve pictures and videos from a pendrive that's not working properly? I bought a pendrive 6 months ago and transferred all my pictures and videos to that pendrive and kept it there because I didn’t have any better device where I could store my pictures. A week or so ago I tried using that pendrive only to see that it's not working at all. I took it to the store I bought it from and he said there isn’t any chance to get them back. I have so many pictures and videos of my cats who died, it’s heartbreaking that I would never get to see their pictures again.