Ford India — Engine problem at 35000 km run excess oil consumption.

I have a ecosport 2015 model. i drove it around 35000 km, at this km i suddenly noticed that the engine oil is empty although the car got serviced at 30, 000 km. when i approached the dealer he is saying that the problem is a comman one and a entire lot is having the same problem. so he asked me to only changed the block to which i don;t agree because if at 35, 000 km i had this problem, what is the guarantee of the engine would work fine. beside engine repaired at workshop is not preferred by me as the engine assembled at the plant is entirely a different process. please suggest me what to do/ they have cheated us by selling a manufacturing defect part and now merely by changing the block they want to clear off the thing for the time being. please suggest me what to do?