Yes I have heard that one before. "I didn't see you" more like you didn't (insert very rude word) look.
That's what the guy said to me after I slammed into the side of his car at a round-about, last year.
He then said the sun was in his eyes. At 8.30am that would be highly unlikely on a flat intersection.
I felt like saying to him : If you couldn't see clearly due to the sun, why did you drive straight through the intersection?

The day I got back on my bike after the crash a lady drove through the exact same intersection, just like the guy I hit.
If I hadn't been riding very cautiously (due to my accident) I would have slammed into her also.
I just yelled into her drivers window: Yes, it is an intersection and YOU do have to give way.

CHEERS.

Mark