Poor Service

Reported a complain and I was called from Nicolway. They couldn't offer me solution. I was told they will call back since last week. I don't mow how long it's take to investigate the matter. The problem on my side, I have to hold the screen everthing and make sure that it doesn't move out of the phone. And I have to predict whose calling as the phone goes blank . most of the time. I believe the head office should have intervene regarding this matter. I don't know if this is how they treat their clients. Shame on you Samsung. My life has become a nightmare. I regret using sumsung