Treatment of Burn on Chin from Laser Hair Removal?

Hi, I had a laser treatment for hair removal for face in March'11.Right after the laser I got a boil on my chin and the doctor asked me to apply creams like Fucibet to control it.Now after 3 months of application of Triobloc,Flavo C,Demelan creams to reduce the scar and correct pigmentation, I still have a scar and depression in my chin.Have done skin peel and skin polish but scar is not going.Doc is suggesting to get cosmetic surgery. Will that help? What other options of treatment can I take?