Basketball foul question??

My teammate just shot a bad 3-pointer. I am facing the basket, but the ball bounces hard over my head and towards the sideline. The player defending me moves quickly into my path as I turn to chase after the rebound. The defender has established themselves with both feet set to take a charge. I am focusing on the ball, so I do not realize they are in my path because I figured they would be chasing the ball too. I slam into the defender because I do not have time to make an adjustment and my focus is on the ball. In this case, I felt that this was a blocking foul by the defender because there was a loose ball and they were not trying to get the rebound and they were facing me. Normally, you go after the rebound and block out with your back. They turned and faced me to set up for a charge like I had the ball in my hand and was dribbling towards the basket. The defender said they did this because they knew they could not beat me to the ball, so they wanted to block me and let the ball bounce out of bounds so their team would get it. No foul was called, but the ball went out of bounds and the other team got it. My question is was there a foul committed? If yes, who committed the foul in this case? I have never had a defender do something like this before, they normally chase after the ball and block out with their backs. I feel like the foul was on the defender for incorrectly blocking my path. No foul was called because nobody could agree on who was at fault for the collision. 

2017-04-11T00:37:33.809Z