Samsung — Samsung m31s Mobile problem

As you said my phone has is working properly and collect from service center.ok but in product only there manufacturer defetive that why my mobile occurred problem 2times why it occurred 2time like that first your service has changed the motherboard and Said if problem will occur Again means product will be given new as said of Priya siva kumar.
Otherwise provide head office address to given mail id otherwise I will proceed legally.
I will not recover my mobile it will be there in Samsung service center Kurnool only upto rectify our product/problem