Telephone Blues lyrics

Telephone Blues
I couldn't sleep last night
I was sittin' by my telephone
All the time wastin'
All the love you've never shown
But someday, someday darlin'
You will realise I'm alone
The last time I saw you,
You promised me you'd come
But time is runnin' out babe
You never call at all
But life's so long babe
Sittin' by my telephone
But someday, someday darlin'
You will realise I'm alone

Submitted by Guest

What do you think is the meaning of Telephone Blues by Eric Clapton?