More of a resolved complaint than a real complaint.
For the past few years I would come home from work to see the "Missed Calls" light on my phone flashing. Cablecom had called while I was working. They would call every single weekday until I happened to be at home to answer and tell them I wasn't interested. The calls would then stop for a couple of months then the cycle would start again.
Apparently, even though I have "no advertising" on my telephone directory entry, Cablecom can call me as I am their customer (the building has Cablecom TV and I have no way to opt out).
So anyway. A couple of months ago I changed my answer machine message to, "Hello. <blah blah>. If this is Cablecom calling then please hang up. I'm not interested. Otherwise leave a message."
About a month ago I got missed calls from them for three days, then nothing since.
I think they might have got the message