Why didn't my surgeon tell me he'd be changing my belly button?

I had an umbilical hernia repair w/sutures. Surgeon told me he'd make a 1 inch incision and repair the "defect" w/"one stitch". Instead he flipped my belly button skin inside out, turned my deep innie into an outtie, and left extraordinarily painful sutures there. It also looks like he moved my belly button up. He never communicated this, said umbilical hernia repair would be simple and non-invasive. Why isn't the actual risk cosmetic & internal risk of this communicated to patients? The sutures in my umbilicus are incredibly painful 1 mth out