Contech
Having a weighing machine in the gaurantee period

I have a weighing machine purchased from vaman instruments which a sales person who have demonstrated and even given the gaurantee for the period of one year after the period of six months the machine got auto off mode so the sales person told me that there is switch problem so he got the switch changed on the second day of being repaired it again got the same problem so now he is telling that it will again be repaired so please tell me what should i do