I just switched and I too have started receiving more unwanted calls. I think it has to do with the number being ported from another carrier and then being open for others to see. Hope it slows down though. I was reading on one of the other posts where people have sent the spam calls over to another number by using the blacklist function. I called the number they were forwarding the spam callers to, it's another spam line. Great trick, send the spamers over to another spammer.