He could be using a cell phone and it is off, which with some phones will not accept calls or messages if his message is not set up. If it is a smart phone you can send a message to the number listed and he should get it that way. It could be a land line which does not accept calls from any phone which has the number blocked to caller ID. Heck I have even gotten so desperate to reach people that I have sent them a snail mail or email at times. Good gun smiths are hard to reach sometimes and I understand more than a few hate calls because they can keep them from getting back into the shop.
