Communication difficulty with getting old (9)

I believe the answer is:

messaging

I'm a little stuck... Click here to teach me more about this clue!

'communication difficulty with getting old' is the definition.
I can't judge whether this definition defines the answer.

'difficulty with getting old' is the wordplay.
'difficulty' becomes 'mess' (mess is a kind of difficulty).
'with' is a charade indicator (letters next to each other).
'getting old' becomes 'aging' (I've seen this before).
'mess'+'aging'='MESSAGING'

Can you help me to learn more?

I've seen this clue in The Hindu.

Want a hint initially instead of a full solution? Install my app