The most common and most likely answer to this crossword clue is the 9 letter word PHONE-INS
P
H
O
N
E
-
I
N
S
Buddy explains!
The straight part
We know that "callers in TV shows" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case callers in tv shows = phone-ins.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PHONE-INS mean?
PHONE-INS noun- A show requiring members of the public to telephone the studio.