I will obviously have an email address. But what about a phone number? The problem is that its home based and that least in the beginning we won't have any one that will be able to answer the calls.
I recommend you do the following:
1) Live chat using Olark.com (use an app on your phone as well). Free or starts at $17/month.
2) VOIP toll free number that forwards to your cell or even converts voice mails into mp3 and forwards it to your email. It's very professional. Use Grasshopper.com starts at $12/month
3) As for emails, I would recommend using Zendesk.com. Easy to use, app included as well. Starts at $2/month per box
Those 3 solutions will make you look like a big brand with minimal cost.
All you have to do now is answer customer inquiries on time :)
Hope this helps.