Complaints about Phone Numbers515-605-####

They call and all tou hear is staric

I was woke up at 10:00 this morning with two phone calls, one right after another, from this number. I finally answered it and the woman said she was (I think) a Trip Advisor. I asked to clarify what she said, "What kind of advisor?" and she hung up. Tried to call the number back immediately and a message comes on saying "Customer Service." When I press one to speak with someone, they're all busy. I get these every single day, several times a day, over and over and over again, and they always hang up. They use a lot of different numbers and you're not allowed to ask questions or they hang up on you. I am so sick of these calls!