HELP!!! WHAT TO DO???
There is almost no information, but I'm also inclined to believe that the best option for you would be to stop any independent actions with disk (including attempts on) and to contact the company that deals only with the recovery of information and nothing more.
Overall, so far, the situation seems to be solved "with small losses". However, depending on what happened with the disk, user disk imaging operations can exacerbate the problem until the complete impossibility of recovery.
In normal/fair date-rekaveri company diagnostics will be free of charge and without obligation. The price is also, most likely, should be adequate, if not to make the disk worse.
Also, I'd focused primarily on the recovery of your files. The disks are not unique and rather "matter of time", but the information on them - not always.
Just in case, here's an article about how to choose a company for data recovery