I failed to do my homework!
I have a friend of mine from Georgia, he told me once:
Her grandmother used to tell him an American proverb ( saying):
Be careful son, life is like a car dealer!!??
I met very nice people at your dealership, no doubt in my mind of it, very nice indeed, they just trying to do their job as salesmen,
If I failed to do my homework, it is my fault, it is not theirs.