Acne from past 7 years, yet no results.

I am 19 right now, and dealing with acne for over 7 years, have took meds such as isotretinoin-20, sebon, and many others, prescribed by my doctor. Had been treated by 2 docctors over the course. But still haven't recovered. Also had a peeling session one time, still not resolved. Spent a lot of money over the medicines,gel cremes, and facewash prescribed by dermatologists. And at last when I ask my doc, about why isn't it getting well , the reply comes as "there are a lot of hormonal changes in your body", "can I stop complete medication, I asked" Reply comes steadily,"No, it could leave scars behind". I won't deny yes I stopped medication in between due to the frustration and after having no results from spending loads of money. So if there's any doctor who could help me treat my acne for permanent basis even if it takes a duration of 6-12 months , it would be great. But please don't reply if you're having just short term solution based treatments.