4 days, 15 calls from this # (403) 879-1194! Gotta call in on them somehow...anyone know how!?

I've also been getting calls. Twice a day for a couple weeks. I've been ignoring them thinking it was a wrong number (bank would come up as 1-800 and anything else important would leave a message) but today I was getting annoyed, they've started calling early in the morning so I answered it and said hello two or three times and then they hung up. I heard a female voice in the background chatting with someone, but no one was talking directly to me.

received 2 calls in 2 days...nothing at other end..BUT received air miles spam call today. could be confirming valid phone number

They have been calling me everyday for 2 weeks! When i call back it answers and electronically says goodbye!