It sounds like you are suffering from depressed (atrophic) acne scars. There are actually a few different subtypes: box, rolling and ice pick scars are all depressed scars.
Basically a large range of skin energy-based devices can help to level them – there is an article on acne scar treatments on Human that summarizes these devices. Subcision, fillers and medical peels to free up scar tissue and enhance collagen growth over the scar areas can also help complement. Skincare is also important to prevent worsening of your current condition.
It would be useful to see some pictures of the affected areas of your face, or go for a proper medical consult (dermatologist or aesthetic physician) to be able to help you further.
Hope this helps!
