I don't think those are permanent scars. I think they are healing acne lesions and post-inflammatory hyperpigmentation, which will clear and fade on their own in 6-12 months.
So, time will take care of it. But...
...the TRICK...is to stop from getting new acne lesions. Because, unless you stop the breakouts, 6 months from now, your old stuff will be clear, but you will just have new healing lesions and hyperpigmentation to contend with. It's a vicious cycle.
Have you tried using the regimen described at acne.org? The regimen consists of cleansing, using a low-dose of benzoyl peroxide as a preventive twice a day, and a very light moisturizer. Their products are excellent and very reasonably priced. BP used preventively is one of the best treatments for acne. Unless you have money for doctors and prescriptions like accutane, acne.org is probably your best chance at clearing.