RF scaring

I had Radio Frequency at 39 , at first my skin , looked good and seem tighter but 3 months later , I noticed scaring like burns in the area the Radio Frequency was applied and the volume loss started to leave dents . This was 4 years ago , my skin has never looks good after after RF. I have tried everything but nothing seem to work . I am spending a lots of money on fillers but the Skin still look bad and I don’t like the way the filler make me look .
My advise to you is stay away from those device .