Very Bad mileage car Tata tigor

I bought TATA TIGOR from KVR DREAM VEHICLES EDAKKAD THOTTADA KANNUR, just before 29 days.After one week problem arised that while driving smoke is coming from the front part of the vehicle and I stopped my car on the roadside,during that time some taxi drivers came to the side of the vehicle and opened the bonnet and they obseverd the problem is Engine oil leakage .And next day I went to service center Edakkad .and this problem solved only after 3 days .After this rectification another problem arised that breaking system is not functioning well and c the company failed to ensure the offerd mileage. I got only 8.5 k .m mileage this problem not resolved yet.