I think you are having hypertrophic scar
following irritant contact dermatitis
due to hair removal
It may be resistant to different modes of treatment you undergone.
Now you have no option except plastic surgery
Scar revision surgery might be done by expert aesthetic surgeon.
And that may give near good result...
You consult aesthetic surgeon,discuss and go ahead if you feel satisfaction.
Otherwise , you accept the condition and live without worry.
I hope you got my answer.
Dr. Ilyas Patel MD