I have a Galaxy S7, Verizon. I think I was tricked into doing something with visual voice mail. Don't want, don't need. Anyway, for whatever reason, when I get a call while on the phone it notifies every second instead of twice per 6 rings as it used to be. The person on the other line can't make out what you are saying. Also, the person calling isn't notified that I'm on the other line like it used to. I can not find any settings in the phone to adjust. Any ideas?