Glass Hob not working

I bought a glass hop at Game . Trouble started 3 months after I bought it. 6 months after reported it to Game Devy technicians came out and said they needed a part. Week after that they came to replace. After they worked on the stove main plate not working. Another 3 to 4 weeks struggling to cook. Game blames Devy. Is this how a brand new stove is suppose to work. Mostly not working.