Calling is easier than the fear of calling. Almost always. The person on the other end has also been waiting.
the phone call you keep postponing
There is also this: silence makes you imagine the other side. What you don’t say grows. You start rehearsing the conversation, and the rehearsal replaces the call.
Every day you tell yourself you will call. By evening the office is closed, or the person is asleep, or you are too tired to speak. Three days pass and the call becomes a debt.