Had this number call several times per day over the last two weeks. Each time I pick up it sits there in silence and after a bit hangs up on me. This makes me feel that this isn't a credible number. When you call the number back it does not give a name of company. Says if you received a call they will call you again within a day. If you want to be added to their do not call list press 1. Since I blocked my number before calling I didn't bother. Not to mention this doesn't work for 90% of these types of callers. They are now on my block list since I have answered on 6 occasions and they have never spoken and only hang up on me.