They are waiting for an opportune time for you NOT to be at home. That way they can 'case' your home for a possible break-in.

The moral of the story is that if anyone wants some service (lawn repair, duct cleaning etc.) then call a reputable company yourself. "Companies" that phone you up are always disreputable, always have excuses and will always rip you off in one manner or another.

NEVER give your credit card information to anyone or any company you don't know!

Calls and then hangs up repeatedly

They keep calling, last one was Friday the 13th at 9:00pm.
Believe you me, if I find out where they are located it definetely will be bad luck for them.
They call and then hang up, no message of course.
Oh well, I guess the scum of the earth have nothing else to do but disturb the good people.
If this is a Duct cleaning company, they need to clean up their own act.

Air duct cleaning call them back 416 800 07 98 and have fun with them

I keep getting phone calls from this fake company with this fake telephone number telling me my computer has viruses.  The man calling has a thick asian (indian) accent.  I told him that I knew for a fact that my computer did not have any viruses because I was in the field, computers are my career...  He kept reading the script, pushing me into their services.  I told him, put me on your do not call list and then he hung up.  I keep receiving the calls and when I answer, they hang up.  I eventually blocked them from the phone but they keep calling.