Where can you get massage treatment for cellulite? Lots of places, the most obvious of which being spas and specialized celulite clinics. These places will likely charge a fee for services rendered, but paying a small fee is much easier to deal with rather than trying to do the treatment all by yourself.
Another thing to keep in mind is that you will need more than one cellulite massage treatment. It would be great to walk into a spa with cellulite and then 1-2 hours later, walk out without any cellulite -- but unfortunately, that isn't the case here. Your best bet is to talk to a cellulite massager "specialist" and ask what type of treatment schedule is right for you.