Looking for Data recovery (Abu Dhabi)

My external hard disk is not getting detected by any of the OS ( I tried it with Mac,Windows and Ubuntu, but none of them are detecting!), but I am able to view all the files and folders while connecting it to the TV! (even I can play videos,songs and photos) I have some important data in it, including my writings which I got a positive response from one of the publishers. My limitation is, I can't hand over my hard disk since I have some confidential files in it (my writing as an example). Anyone have any idea, how to recover the data? I'm using MacBook and I will be so happy if you can help me with the best data recovery software available in Mac platform. Or, anyone can suggest a team who can recover my data with my presence? Please reply