I'm using a Samsung Note 10 and have been with Verizon since 2003. Recently, some of my friends are telling me they receive a message that I'm not accepting calls at the moment when they try to call me. I'm also not receiving their texts. I am able to call them and send them texts, which they receive. I don't receive their response. We have been friends for many years. They have always been with AT&T. I'm looking for a solution to this problem. Their numbers are not in my blocked list. I believe I've checked all filtering & blocking possibilities. And, I've restarted my cell several times. Help!