Dell 24 Inspiron

Dell computer keeps acting up, with some colored squares that crash the computer and keeps it in a frozen state. I sent the system to Dell repair center in Texas like so many times, and they send it back with a piece of paper saying that the system has been tested for full functionality. But the problem still persist. As of today, the computer remained frozen for a day, I had to shut it down and restart it. With all that information, I call the customer support and they said that they were going to replace it with a refurbished system. I agreed, but it seems like I was fooled by their Indian department.They told me they were going to call me in 24 hours, but no one has called me..