I'm always getting calls from school mums wanting something or other as I'm regarded as the efficient one. They never call just for a chat or so see how I am, only when they want something - eg spellings for the test, the ones who don't do school run are always asking me to buy tickets for events or to ask the teacher something, which I'm sure they could do on the phone anyway. Good friends also have my landline number so would be able to get through.