Kickoff Recovery in the Endzone

[ChileColts]

Hi everyone, first of all my apologies in advance because im not an english native speaker/writer.

Last week, i was in a game and the ref. call a TD on a recovery in the endzone, one coach argumented the call saying the recovery was a Touchback, the other one keep silent and take the points.

the situation was:

A Team kick off the ball.
B team Receive the ball.

The ball hit the endzone and stay there, the B Team's coach scream to his player do not touch the ball, and let the A Team recover the ball, i think he was confused with a punt recovery and Kick off recovery.

The A team (Kicking team) recover the ball in the endzone and was awarded with a TD by the ref.

the question is: was that call correct or was a mistake ?? if the call was wrong, what its the correct call ??

I thought the call was correct because after 10 yards, the ball its free and was recovery inside the endzone by the kicking team.

Thanks in advance to everyone who spend time to read my post.