Do they keep notes on who sounded like they answered last time?
Why hang up without saying anything?
What a waste of time.
What is their motivation?
Are they somehow making money?
Do they get the occasional dummy who gives them money?
Or are they insane?
I don't understand.

This number called my cell phone  this evening at 8:45 pm, I had missed the call so I called it back, all I got was a dial tone.

I received a call from the Duct Cleaning company. A man with a south asian accent is always the one who calls. recently he has started calling from the number (647) 478-3163

We have been called by this company i can not find anything on it except

-landline phone number (416) 646-3601
-registerd with allstream (that is the carrier )
and nothing else .... i got silence and listend to then it hung up and noting has called back yet thankfully HOWEVER shortly afterwards i recived a call from telus almost immideatly from  hanging up

do not know if it is related but who knows .

Received a lot of call from this number.sone one says Calling from TopLine Duct cleaning. AND HE GAVE HIS NAME AS MOHAMMAD TALHAH. TIME AND AGAIN RECEIVING CALLS FROM THIS NUMBER. A NUISANCE

These people are driving me nuts.  They call late at night and leave no message.  I have reported this number to the Do Not Call Registry and I still get calls from these jerks.