Fouls underneat the goal

[RX Ref]

Do you really know that they were fouls or do you think there had to be because there was some much going on? Yesterday in a game was doing the coach kept yelling " you gotta call something" every time we had multiple put backs under the basket. During a dead ball I told him I was not going to make something up just beacause we have a flurry under the basket, and I don't "HAVE to call something if there is nothing".