Here's one benefit of using an answering service

We've just had this message from a client:

"Morning

I am here in the office on mountains of paperwork and the phone is over to you

I will return calls asap"

I hear you ask why bother? The reasons are that our clients care about their clients and want to deliver a high level of customer service, but they need quiet time or head space to carry out the work they are being commissioned to do, so letting us know means that we can manage callers expectations of a call back. This helps build a good reputation and image for our client.