The People's Operator has a US based customer service team. They are positioned as a carrier who is socially conscious and they will donate 10% of your monthly bill to a charity of your choice. You don't need to do anything, TPO will take care of it all for you.
Seashells contain calcium carbonate. The calcium carbonate reacts with the acid in the vinegar and causes carbon dioxide bubbles to form. Even though the acid in vinegar is weak it can, over a period of time, dissolve shells.
Calcium Carbonate is another natural filler. It is commonly found in the shells of marine animals as well as eggshells. This ingredient is also regularly used in some calcium supplements and for antacids as well as toothpastes. Sometimes it is even added to almond and soy milk to fortify nutritional content.