IFB Washing Machine Supremo Ex
My IFB Machine's Door Get Locked

I Tajinder Singh having Ifb washing machine, Model Supremo Ex 6 kg, door get locked automatically, i registered a complaint against it at ifb service center, the company service boy come in night & said machine's timer not working, change it costing to you around Rs 2400/- but he is making fool of us because timer is already working, every function completes on time. Suggest me what can i do

Regards

Tajinde