Sounds like a bloke who used to repair bikes for kids for Christmas. Think he was in Moorabbin or the southern suburbs somewhere.
Depends where you are, the BrunsBUG bike shed at CERES in East Brunswick accepts bike donations. Last year a group called "Wheels of Fortune" were accepting bike donations.
I found this in an old email, but alas, have no contact details;
'......The Wheels of Fortune program will be a one-day collection of unused, unwanted and unneeded bikes, sourced from the Melbourne community. On the day, bikes will be set up for transportation and stored until they are loaded into shipping containers...."
Don't know whether this group are still operating. Has anyone any info?