Lenovo — Extremely bad service in qatar

I bought Lenovo s90 from sharaf dj qatar .one month after that the mobile started getting too much hot and out of charge in few hours.I took for sharaf dj and they sent to service .17 days after that they gave to me with technical report .battery on, software update . Next day the mobile still with same trouble not repaired at all. I brought it back to sharaf dj and they Said again wait 14 days. Did I buy the Lenovo smart phone to suffer with it and it's bad service .the mobile will spend time in service more than in my hands. This is really shame.in such situation why no instant replacement or it is really bad Lenovo device . Hope to solve my issue My mobile number[protected]