What do you call here?

[Jurassic Referee]

Originally Posted by OHBBREF

in this case the officials blew the call as they called basket interference anyway. but the judgment if they had made the right Call "T" was sound, the player could not be blocking the shot because he hit the backboard below the rim.

That's a wrong assumption also. Where the backboard was hit is irrelevant as long as the the contact was on the same side of the backboard that the ball was put up on. The criteria used to determine the call is simply judging whether the player was legitimately attempting to block the ball or not.

Don't make the call any harder than it has to be.