Xiaomi India — new mobile scrap due to service center fraud

I purchased Redmi 4 mobile (3gb.@8499 inr.)from on line mi store for birthday-gift in advance days. Invoice no:972880 on dated :20 dec'17. Order no:[protected].but big issue of over heating. However, within used two days itself, the touch of the mobile not working. We checked with mi. service center Gandhinagar - 382007.mi.centre said me, "it is liquid damage" & give me estimated of touch pad replace charge Rs. 2772/-.but I am not agree for repair. I am not satisfied with the mi center. After 7 days i visited another mi center Ahmedabad - 380024 & checking the phone, they said the phone's touch pad & main board also not working. Give me estimated Rs. 7764/-.I am not agree with. I think my phone over damaged by previous mi. Service center. I am very disappointed with my phone & mi. service centers, because I don't used phone totally 48 hours also. So kindly request to you for replace or back my phone.