No customer service and the warranties are a lie

I am really disappointed at the non existent service I am receiving at Hifi corp, I complained about the service I received at their mall@carnival branch and the fact that they are refusing to fix my samsung phone that I bought 10months ago and is still under warranty. I understand how warranties work and I openly asked for a diagnosis report and clarity behind why they cant fix a phone that out of nowhere didnt charge,the store itself doesn't have order and a service and I sent a compliant online till today,it has been a week there is no correspondence from hifi or the JDGroup,this is pathetic and unacceptable for such a big business. They have had that phone for a good 3weeks and no one can give me answers. I will never set foot there again,and think twice before you go buy anything with them.