I was having car insurance with them, and when I took the insurance, I asked them that comprehensive insurance covers every

I was having car insurance with them, and when I took the insurance, I asked them that comprehensive insurance covers every. Now, the car was involved in an accident, and they are telling me that I did not cover the shortfall. I feel that they were not honest with me because when I asked them that comprehensive covers everything, they should have said no and advised me about the shortfall. Now the car is written off and I have to pay something I don't have. They only settled the retail value of the car.