Hul Pureit — Pure it ultima ro adpter and control circuit problem

Since i bought this product having trouble (july2015)..Always need to change gkk kit.Almost lot of money spend for to change of this but still problem not yet solve.Service engineer he used come and he always advice to change something something and he charged a lot money from us.
From last 2 days the ro wont able to start, after complaining service engineer advice that adapter and control circuit has gone and need to replace with new one which it cost around 7500 rs.
Now i dont know what i has to do since i bought this product i spend around 50k.
Its a really un affordable product.
Please do needful.