called but no message voip caller id. some type of scam

finally talked to these people. it is a car warranty scam. they won't take no for an answer. I told them I wasn't interested and they hung up on me then 10 minutes later they call back and hang up again when I tell them I am not interested. no legitimate business will operate like this.  they use a voip number on their caller id and call themselves dealer services.

called did not answer, accidentally called number and got there is not one here to take your call in a robo type voice