@brr I am sorry that your surgeries have been so unsuccessful. I know people who have loved the sling. I would have had it myself if it was indicated for my type of incontinence but it is not. I know nothing about sacrocolplexy.
What does your doctor have to say about your pain? If you don't get satisfaction from your current doctor I hope you will go to a different one, one who is at a different medical center, preferably at a teaching hospital. They see the most so often know the most. Doctors affiliated with the same facility will rarely go against another doctor.
JK