How do you feel about cell phone users who are in your house? They are there to visit you but talk on phone?

Some brought my granddaughter to my house and we [granddaughter] and I were talking. That persons cell phone rang, she sat in the room with us talking on her cell. She stomped her foot to quieten us while she talked. I stomped my foot back and kept on talking. We have other rooms in the house, we have a sun room adjoining the room we were in that she could have walked into to talk. This is my room, my house and my granddaughter. Do not be stomping at me to quieten me, how do you feel?