Denim crotch holes
 

I've ran into this problems for a couple of my old Rocks for quite some time now and its getting to a point where all the threads are ripped up completely leaving two giants holes on the side of both my legs. I was wondering if it is salvageable and if so where should I take them to get it fixed up.

they are salvageable, i got my rocks fixed at a tailor, same issue, they patched it up and its relatively invisible.