Lenovo — Lenovo is not providing any service

Sir i have bought lenovo laptop b50-70 series i have updated my window 8.1 to 10 but here is many problems in this & now they are saying that they will charge rs 1900 to window backup but every laptop company is providing window free within warranty now they are not providing any software ( as they are saying that thay have not any updated software as also in service centre) & sir there is much heating problem in my laptop as (wifi, bluetooth & hotspot etc nothing is working) & now plz do something as i cant use my laptop as it is heating much more hoping for an instant and favourable step