I checked that 507 number you posted and if it's an area code it belongs in Minnesota.  I got that call and it rang as long distance with area code 613 and it shouldn't have so i didn't answer.

SCAM ALERT!!!! If you receive a call from (613) 722-1226 with "unknown caller" attached to it, please be aware that this is a large telemarketing scam for duct cleaning in the "613" area code zone.  This phone number is owned by a reputable business in the city of Ottawa but they are NOT making these calls and they DO NOT telemarket.  Please contact your local police to report any problems.

Also received a call from this number sat afternoon.  It did have a long distance ring and I did not answer it. The number shown on the pop up was +507 (613) 722-1226 .  Except for the 507 this would be a local call to me in Ottawa.

I dialled the number back and it is being spoofed - the poor company being spoofed is getting a slew of calls by angry call recipients!

i got a call from this number  so i looked it up and its a heating place in ottawa.what i dont get is why are they calling on a tuesday night at 8:30 eastern?and why me, i live 2 hours away and i have never done business with them (i rent).

This is a scam!  got a call Sunday at 4pm.