Who called from 5032773521

Just got called from them twice, I didn't answer either time said it was an oregan number I'm.in.New Brunswixk but have a Nova Scotia number

this is an unknown number to me. i'm not sure how they did it, but my phone rang even though I'd set it to "silent" (I was sleeping). I'm glad I didn't answer.

Just got called as well..didnt answer.

got a call from that number at 945am and they just hungup. I'm in gta.

I worked night and went to bed at 9 am; they telephoned at 10 am to my mobile phone.
How to stop this kinds of calls?