Leave phone in silent mode by default. If someone wants to speak to me then we have to agree a day and a time for that call. This is, admittedly, extreme but I

Leave phone in silent mode by default. If someone wants to speak to me then we have to agree a day and a time for that call. This is, admittedly, extreme but I already have an aversion to using the phone and can manage just fine (99% of the time) with email. For me, an unwanted call isn't just inconvenient for the duration of the call but for quite a long period afterwards because my train of thought has been interrupted and I can't just pick up where I left off.