I used to have a phone number on my web site. Over time the majority of my customers migrated to email and the few that didn't seemed to mostly be time wasters.

I used to have a phone number on my web site. Over time the majority of my customers migrated to email and the few that didn't seemed to mostly be time wasters. I guess it didn't help that I'm in the UK and the majority of my customers are in the US so there were time differences to deal with. I will still phone customers if they ask although I always push back on that until I have some details on their issue. Conference calls are nearly always a complete waste of time when it comes to support but can be helpful when closing sales.