Not at all. You might add something like this to your outgoing message:
I am not available to answer the phone right now. The best way to contact me is via e-mail to
![[email address]](http://www.askmehelpdesk.com/?emailimage=295d0f669c47a685c87d83dca76b4079)
, ro you can leave a message at the tone and I will return your call has soon as I get it.